diff --git a/cps-ncmp-service/pom.xml b/cps-ncmp-service/pom.xml
index 0f5a234..864ea0d 100644
--- a/cps-ncmp-service/pom.xml
+++ b/cps-ncmp-service/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.onap.cps</groupId>
         <artifactId>cps-parent</artifactId>
-        <version>3.2.0-SNAPSHOT</version>
+        <version>3.2.1-SNAPSHOT</version>
         <relativePath>../cps-parent/pom.xml</relativePath>
     </parent>
 
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/NetworkCmProxyCmHandlerQueryService.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/NetworkCmProxyCmHandlerQueryService.java
index faf58b9..7322ebc 100644
--- a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/NetworkCmProxyCmHandlerQueryService.java
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/NetworkCmProxyCmHandlerQueryService.java
@@ -21,8 +21,8 @@
 package org.onap.cps.ncmp.api;
 
 import java.util.Set;
+import org.onap.cps.ncmp.api.models.CmHandleQueryServiceParameters;
 import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle;
-import org.onap.cps.spi.model.CmHandleQueryServiceParameters;
 
 public interface NetworkCmProxyCmHandlerQueryService {
     /**
@@ -40,4 +40,12 @@
      * @return collection of cm handle ids
      */
     Set<String> queryCmHandleIds(CmHandleQueryServiceParameters cmHandleQueryServiceParameters);
+
+    /**
+     * Query and return cm handles that match the given query parameters.
+     *
+     * @param cmHandleQueryServiceParameters the cm handle query parameters
+     * @return collection of cm handle ids
+     */
+    Set<String> queryCmHandleIdsForInventory(CmHandleQueryServiceParameters cmHandleQueryServiceParameters);
 }
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/NetworkCmProxyDataService.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/NetworkCmProxyDataService.java
index 0ea0674..c9810e9 100644
--- a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/NetworkCmProxyDataService.java
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/NetworkCmProxyDataService.java
@@ -30,6 +30,7 @@
 import java.util.Set;
 import org.onap.cps.ncmp.api.inventory.CompositeState;
 import org.onap.cps.ncmp.api.models.CmHandleQueryApiParameters;
+import org.onap.cps.ncmp.api.models.CmHandleQueryServiceParameters;
 import org.onap.cps.ncmp.api.models.DmiPluginRegistration;
 import org.onap.cps.ncmp.api.models.DmiPluginRegistrationResponse;
 import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle;
@@ -183,4 +184,12 @@
      * @return set of cm handle IDs
      */
     Set<String> getAllCmHandleIdsByDmiPluginIdentifier(String dmiPluginIdentifier);
+
+    /**
+     * Get all cm handle IDs by various search criteria.
+     *
+     * @param cmHandleQueryServiceParameters cm handle query parameters
+     * @return set of cm handle IDs
+     */
+    Set<String> executeCmHandleIdSearchForInventory(CmHandleQueryServiceParameters cmHandleQueryServiceParameters);
 }
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyCmHandlerQueryServiceImpl.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyCmHandlerQueryServiceImpl.java
index 1674c52..a8fc6d7 100644
--- a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyCmHandlerQueryServiceImpl.java
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyCmHandlerQueryServiceImpl.java
@@ -20,11 +20,11 @@
 
 package org.onap.cps.ncmp.api.impl;
 
+import static org.onap.cps.ncmp.api.impl.utils.RestQueryParametersValidator.validateCpsPathConditionProperties;
+import static org.onap.cps.ncmp.api.impl.utils.RestQueryParametersValidator.validateModuleNameConditionProperties;
 import static org.onap.cps.ncmp.api.impl.utils.YangDataConverter.convertYangModelCmHandleToNcmpServiceCmHandle;
 import static org.onap.cps.spi.FetchDescendantsOption.FETCH_DIRECT_CHILDREN_ONLY;
 import static org.onap.cps.spi.FetchDescendantsOption.INCLUDE_ALL_DESCENDANTS;
-import static org.onap.cps.utils.CmHandleQueryRestParametersValidator.validateCpsPathConditionProperties;
-import static org.onap.cps.utils.CmHandleQueryRestParametersValidator.validateModuleNameConditionProperties;
 
 import java.util.ArrayList;
 import java.util.Collection;
@@ -40,16 +40,18 @@
 import lombok.extern.slf4j.Slf4j;
 import org.onap.cps.cpspath.parser.PathParsingException;
 import org.onap.cps.ncmp.api.NetworkCmProxyCmHandlerQueryService;
+import org.onap.cps.ncmp.api.impl.utils.CmHandleQueryConditions;
+import org.onap.cps.ncmp.api.impl.utils.InventoryQueryConditions;
 import org.onap.cps.ncmp.api.impl.utils.YangDataConverter;
 import org.onap.cps.ncmp.api.inventory.CmHandleQueries;
 import org.onap.cps.ncmp.api.inventory.InventoryPersistence;
+import org.onap.cps.ncmp.api.inventory.enums.PropertyType;
+import org.onap.cps.ncmp.api.models.CmHandleQueryServiceParameters;
 import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle;
 import org.onap.cps.spi.exceptions.DataValidationException;
 import org.onap.cps.spi.model.Anchor;
-import org.onap.cps.spi.model.CmHandleQueryServiceParameters;
 import org.onap.cps.spi.model.ConditionProperties;
 import org.onap.cps.spi.model.DataNode;
-import org.onap.cps.utils.ValidQueryProperties;
 import org.springframework.stereotype.Service;
 
 @Service
@@ -113,6 +115,92 @@
         return moduleNameQueryResult;
     }
 
+    @Override
+    public Set<String> queryCmHandleIdsForInventory(
+            final CmHandleQueryServiceParameters cmHandleQueryServiceParameters) {
+
+        if (cmHandleQueryServiceParameters.getCmHandleQueryParameters().isEmpty()) {
+            return getAllCmHandleIds();
+        }
+
+        final Map<String, NcmpServiceCmHandle> publicPropertiesQueryResult = queryCmHandlesByPublicProperties(
+                cmHandleQueryServiceParameters);
+        if (publicPropertiesQueryResult != null && publicPropertiesQueryResult.isEmpty()) {
+            return Collections.emptySet();
+        }
+
+        final Map<String, NcmpServiceCmHandle> privatePropertiesQueryResult = queryCmHandlesByPrivateProperties(
+                cmHandleQueryServiceParameters);
+        if (privatePropertiesQueryResult != null && privatePropertiesQueryResult.isEmpty()) {
+            return Collections.emptySet();
+        }
+
+        final Map<String, NcmpServiceCmHandle> dmiPropertiesQueryResult = queryCmHandlesByDmiPlugin(
+                cmHandleQueryServiceParameters);
+        if (dmiPropertiesQueryResult != null && dmiPropertiesQueryResult.isEmpty()) {
+            return Collections.emptySet();
+        }
+
+        final Map<String, NcmpServiceCmHandle> combinedResult =
+              combineQueryResults(publicPropertiesQueryResult, privatePropertiesQueryResult, dmiPropertiesQueryResult);
+
+        return combinedResult.keySet();
+    }
+
+    private Map<String, NcmpServiceCmHandle> queryCmHandlesByDmiPlugin(
+            final CmHandleQueryServiceParameters cmHandleQueryServiceParameters) {
+        final Map<String, String> dmiPropertyQueryPairs =
+                getPropertyPairs(cmHandleQueryServiceParameters.getCmHandleQueryParameters(),
+                        InventoryQueryConditions.CM_HANDLE_WITH_DMI_PLUGIN.getName());
+        if (dmiPropertyQueryPairs.isEmpty()) {
+            return NO_QUERY_TO_EXECUTE;
+        }
+
+        final String dmiPluginIdentifierValue = dmiPropertyQueryPairs.get(
+                PropertyType.DMI_PLUGIN.getYangContainerName());
+
+        final Set<NcmpServiceCmHandle> cmHandlesByDmiPluginIdentifier = cmHandleQueries
+                .getCmHandlesByDmiPluginIdentifier(dmiPluginIdentifierValue);
+
+        return cmHandlesByDmiPluginIdentifier.stream()
+                .collect(Collectors.toMap(NcmpServiceCmHandle::getCmHandleId, cmH -> cmH));
+    }
+
+    private Map<String, NcmpServiceCmHandle> queryCmHandlesByPrivateProperties(
+            final CmHandleQueryServiceParameters cmHandleQueryServiceParameters) {
+
+        final Map<String, String> privatePropertyQueryPairs =
+                getPropertyPairs(cmHandleQueryServiceParameters.getCmHandleQueryParameters(),
+                        InventoryQueryConditions.HAS_ALL_ADDITIONAL_PROPERTIES.getName());
+
+        return privatePropertyQueryPairs.isEmpty()
+                ? NO_QUERY_TO_EXECUTE
+                : cmHandleQueries.queryCmHandleAdditionalProperties(privatePropertyQueryPairs);
+    }
+
+    private Map<String, NcmpServiceCmHandle> queryCmHandlesByPublicProperties(
+            final CmHandleQueryServiceParameters cmHandleQueryServiceParameters) {
+
+        final Map<String, String> publicPropertyQueryPairs =
+                getPropertyPairs(cmHandleQueryServiceParameters.getCmHandleQueryParameters(),
+                        CmHandleQueryConditions.HAS_ALL_PROPERTIES.getConditionName());
+
+        return publicPropertyQueryPairs.isEmpty()
+                ? NO_QUERY_TO_EXECUTE
+                : cmHandleQueries.queryCmHandlePublicProperties(publicPropertyQueryPairs);
+    }
+
+    private Map<String, NcmpServiceCmHandle> combineQueryResults(
+            final Map<String, NcmpServiceCmHandle> publicPropertiesQueryResult,
+            final Map<String, NcmpServiceCmHandle> privatePropertiesQueryResult,
+            final Map<String, NcmpServiceCmHandle> dmiPropertiesQueryResult) {
+
+        final Map<String, NcmpServiceCmHandle> propertiesCombinedResult = cmHandleQueries
+                .combineCmHandleQueries(publicPropertiesQueryResult, privatePropertiesQueryResult);
+        return cmHandleQueries
+                .combineCmHandleQueries(propertiesCombinedResult, dmiPropertiesQueryResult);
+    }
+
     private Map<String, NcmpServiceCmHandle> combineWithModuleNameQuery(
             final CmHandleQueryServiceParameters cmHandleQueryServiceParameters,
             final Map<String, NcmpServiceCmHandle> previousQueryResult) {
@@ -164,7 +252,8 @@
         }
 
         final Map<String, String> publicPropertyQueryPairs =
-                getPublicPropertyPairs(cmHandleQueryServiceParameters.getCmHandleQueryParameters());
+                getPropertyPairs(cmHandleQueryServiceParameters.getCmHandleQueryParameters(),
+                        CmHandleQueryConditions.HAS_ALL_PROPERTIES.getConditionName());
         final Map<String, NcmpServiceCmHandle> propertiesQueryResult = publicPropertyQueryPairs.isEmpty()
                 ? NO_QUERY_TO_EXECUTE : cmHandleQueries.queryCmHandlePublicProperties(publicPropertyQueryPairs);
 
@@ -178,7 +267,7 @@
 
     private Collection<String> getModuleNamesForQuery(final List<ConditionProperties> conditionProperties) {
         final List<String> result = new ArrayList<>();
-        getConditions(conditionProperties, ValidQueryProperties.HAS_ALL_MODULES.getQueryProperty())
+        getConditions(conditionProperties, CmHandleQueryConditions.HAS_ALL_MODULES.getConditionName())
             .parallelStream().forEach(
                 conditionProperty -> {
                     validateModuleNameConditionProperties(conditionProperty);
@@ -190,15 +279,15 @@
 
     private Map<String, String> getCpsPath(final List<ConditionProperties> conditionProperties) {
         final Map<String, String> result = new HashMap<>();
-        getConditions(conditionProperties, ValidQueryProperties.WITH_CPS_PATH.getQueryProperty()).forEach(
+        getConditions(conditionProperties, CmHandleQueryConditions.WITH_CPS_PATH.getConditionName()).forEach(
                 result::putAll);
         return result;
     }
 
-    private Map<String, String> getPublicPropertyPairs(final List<ConditionProperties> conditionProperties) {
+    private Map<String, String> getPropertyPairs(final List<ConditionProperties> conditionProperties,
+                                                       final String queryProperty) {
         final Map<String, String> result = new HashMap<>();
-        getConditions(conditionProperties,
-                ValidQueryProperties.HAS_ALL_PROPERTIES.getQueryProperty()).forEach(result::putAll);
+        getConditions(conditionProperties, queryProperty).forEach(result::putAll);
         return result;
     }
 
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java
index 27c3646..d00d211 100755
--- a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java
@@ -25,7 +25,7 @@
 
 import static org.onap.cps.ncmp.api.impl.constants.DmiRegistryConstants.NFP_OPERATIONAL_DATASTORE_DATASPACE_NAME;
 import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum;
-import static org.onap.cps.utils.CmHandleQueryRestParametersValidator.validateCmHandleQueryParameters;
+import static org.onap.cps.ncmp.api.impl.utils.RestQueryParametersValidator.validateCmHandleQueryParameters;
 
 import com.hazelcast.map.IMap;
 import java.time.OffsetDateTime;
@@ -45,6 +45,8 @@
 import org.onap.cps.ncmp.api.impl.event.lcm.LcmEventsCmHandleStateHandler;
 import org.onap.cps.ncmp.api.impl.operations.DmiDataOperations;
 import org.onap.cps.ncmp.api.impl.operations.DmiOperations;
+import org.onap.cps.ncmp.api.impl.utils.CmHandleQueryConditions;
+import org.onap.cps.ncmp.api.impl.utils.InventoryQueryConditions;
 import org.onap.cps.ncmp.api.impl.utils.YangDataConverter;
 import org.onap.cps.ncmp.api.impl.yangmodels.YangModelCmHandle;
 import org.onap.cps.ncmp.api.inventory.CmHandleQueries;
@@ -54,6 +56,7 @@
 import org.onap.cps.ncmp.api.inventory.DataStoreSyncState;
 import org.onap.cps.ncmp.api.inventory.InventoryPersistence;
 import org.onap.cps.ncmp.api.models.CmHandleQueryApiParameters;
+import org.onap.cps.ncmp.api.models.CmHandleQueryServiceParameters;
 import org.onap.cps.ncmp.api.models.CmHandleRegistrationResponse;
 import org.onap.cps.ncmp.api.models.CmHandleRegistrationResponse.RegistrationError;
 import org.onap.cps.ncmp.api.models.DmiPluginRegistration;
@@ -64,7 +67,6 @@
 import org.onap.cps.spi.exceptions.CpsException;
 import org.onap.cps.spi.exceptions.DataNodeNotFoundException;
 import org.onap.cps.spi.exceptions.DataValidationException;
-import org.onap.cps.spi.model.CmHandleQueryServiceParameters;
 import org.onap.cps.spi.model.ModuleDefinition;
 import org.onap.cps.spi.model.ModuleReference;
 import org.onap.cps.utils.JsonObjectMapper;
@@ -171,9 +173,7 @@
     public Set<NcmpServiceCmHandle> executeCmHandleSearch(final CmHandleQueryApiParameters cmHandleQueryApiParameters) {
         final CmHandleQueryServiceParameters cmHandleQueryServiceParameters = jsonObjectMapper.convertToValueType(
                 cmHandleQueryApiParameters, CmHandleQueryServiceParameters.class);
-
-        validateCmHandleQueryParameters(cmHandleQueryServiceParameters);
-
+        validateCmHandleQueryParameters(cmHandleQueryServiceParameters, CmHandleQueryConditions.ALL_CONDITION_NAMES);
         return networkCmProxyCmHandlerQueryService.queryCmHandles(cmHandleQueryServiceParameters);
     }
 
@@ -187,9 +187,7 @@
     public Set<String> executeCmHandleIdSearch(final CmHandleQueryApiParameters cmHandleQueryApiParameters) {
         final CmHandleQueryServiceParameters cmHandleQueryServiceParameters = jsonObjectMapper.convertToValueType(
                 cmHandleQueryApiParameters, CmHandleQueryServiceParameters.class);
-
-        validateCmHandleQueryParameters(cmHandleQueryServiceParameters);
-
+        validateCmHandleQueryParameters(cmHandleQueryServiceParameters, CmHandleQueryConditions.ALL_CONDITION_NAMES);
         return networkCmProxyCmHandlerQueryService.queryCmHandleIds(cmHandleQueryServiceParameters);
     }
 
@@ -238,6 +236,19 @@
     }
 
     /**
+     * Get all cm handle IDs by various properties.
+     *
+     * @param cmHandleQueryServiceParameters cm handle query parameters
+     * @return set of cm handle IDs
+     */
+    @Override
+    public Set<String> executeCmHandleIdSearchForInventory(
+            final CmHandleQueryServiceParameters cmHandleQueryServiceParameters) {
+        validateCmHandleQueryParameters(cmHandleQueryServiceParameters, InventoryQueryConditions.ALL_CONDITION_NAMES);
+        return networkCmProxyCmHandlerQueryService.queryCmHandleIdsForInventory(cmHandleQueryServiceParameters);
+    }
+
+    /**
      * Retrieve cm handle details for a given cm handle.
      *
      * @param cmHandleId cm handle identifier
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/utils/CmHandleQueryConditions.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/utils/CmHandleQueryConditions.java
new file mode 100644
index 0000000..b1bb7f7
--- /dev/null
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/utils/CmHandleQueryConditions.java
@@ -0,0 +1,42 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2022 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.api.impl.utils;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.stream.Collectors;
+import lombok.Getter;
+
+@Getter
+public enum CmHandleQueryConditions {
+    HAS_ALL_PROPERTIES("hasAllProperties"),
+    HAS_ALL_MODULES("hasAllModules"),
+    WITH_CPS_PATH("cmHandleWithCpsPath");
+
+    public static final Collection<String> ALL_CONDITION_NAMES = Arrays.stream(CmHandleQueryConditions.values())
+        .map(CmHandleQueryConditions::getConditionName).collect(Collectors.toList());
+
+    private final String conditionName;
+
+    CmHandleQueryConditions(final String conditionName) {
+        this.conditionName = conditionName;
+    }
+}
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/utils/InventoryQueryConditions.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/utils/InventoryQueryConditions.java
new file mode 100644
index 0000000..9437cf0
--- /dev/null
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/utils/InventoryQueryConditions.java
@@ -0,0 +1,42 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2022 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.api.impl.utils;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public enum InventoryQueryConditions {
+
+    HAS_ALL_PROPERTIES("hasAllProperties"),
+    HAS_ALL_ADDITIONAL_PROPERTIES("hasAllAdditionalProperties"),
+    CM_HANDLE_WITH_DMI_PLUGIN("cmHandleWithDmiPlugin");
+
+    public static final List<String> ALL_CONDITION_NAMES = Arrays.stream(InventoryQueryConditions.values())
+        .map(InventoryQueryConditions::getName).collect(Collectors.toList());
+
+    private final String name;
+
+}
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/utils/RestQueryParametersValidator.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/utils/RestQueryParametersValidator.java
new file mode 100644
index 0000000..2ef97ca
--- /dev/null
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/utils/RestQueryParametersValidator.java
@@ -0,0 +1,125 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2022 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.api.impl.utils;
+
+import com.google.common.base.Strings;
+import java.util.Collection;
+import java.util.Map;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.cps.ncmp.api.models.CmHandleQueryServiceParameters;
+import org.onap.cps.spi.exceptions.DataValidationException;
+
+@Slf4j
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public class RestQueryParametersValidator {
+
+    /**
+     * Validate query parameters.
+     *
+     * @param cmHandleQueryServiceParameters name of data to be validated
+     * @param validConditionNames valid condition names
+     */
+    public static void validateCmHandleQueryParameters(
+        final CmHandleQueryServiceParameters cmHandleQueryServiceParameters,
+        final Collection<String> validConditionNames) {
+        cmHandleQueryServiceParameters.getCmHandleQueryParameters().forEach(
+                cmHandleQueryParameter -> {
+                    if (validConditionNames.stream().noneMatch(validConditionName ->
+                        validConditionName.equals(cmHandleQueryParameter.getConditionName()))) {
+                        throw createDataValidationException(
+                                String.format("Wrong 'conditionName': %s - please supply a valid name.",
+                                cmHandleQueryParameter.getConditionName()));
+                    }
+                    if (cmHandleQueryParameter.getConditionParameters().isEmpty()) {
+                        throw createDataValidationException(
+                                "Empty 'conditionsParameters' - please supply a valid condition parameter.");
+                    }
+                    cmHandleQueryParameter.getConditionParameters().forEach(
+                            RestQueryParametersValidator::validateConditionParameter
+                    );
+                }
+        );
+    }
+
+    private static void validateConditionParameter(final Map<String, String> conditionParameter) {
+        if (conditionParameter.isEmpty()) {
+            throw createDataValidationException(
+                    "Empty 'conditionsParameter' - please supply a valid condition parameter.");
+        }
+        if (conditionParameter.size() > 1) {
+            throw createDataValidationException("Too many names in one 'conditionsParameter' -"
+                    + " please supply one name in one condition parameter.");
+        }
+        conditionParameter.forEach((key, value) -> {
+            if (Strings.isNullOrEmpty(key)) {
+                throw createDataValidationException(
+                        "Missing 'conditionsParameterName' - please supply a valid name.");
+            }
+        });
+    }
+
+    /**
+     * Validate module name condition properties.
+     * @param conditionProperty name of data to be validated
+     */
+    public static void validateModuleNameConditionProperties(final Map<String, String> conditionProperty) {
+        if (conditionProperty.containsKey("moduleName") && !conditionProperty.get("moduleName").isEmpty()) {
+            return;
+        }
+        throw createDataValidationException("Wrong module condition property. - "
+                + "please supply a valid condition property.");
+    }
+
+    /**
+     * Validate CPS path condition properties.
+     * @param conditionProperty name of data to be validated
+     */
+    public static boolean validateCpsPathConditionProperties(final Map<String, String> conditionProperty) {
+        if (conditionProperty.isEmpty()) {
+            return true;
+        }
+        if (conditionProperty.size() > 1) {
+            throw createDataValidationException("Only one condition property is allowed for the CPS path query.");
+        }
+        if (!conditionProperty.containsKey("cpsPath")) {
+            throw createDataValidationException(
+                "Wrong CPS path condition property. - expecting \"cpsPath\" as the condition property.");
+        }
+        final String cpsPath = conditionProperty.get("cpsPath");
+        if (cpsPath.isBlank()) {
+            throw createDataValidationException(
+                "Wrong CPS path. - please supply a valid CPS path.");
+        }
+        if (cpsPath.contains("/additional-properties")) {
+            log.debug("{} - Private metadata cannot be queried. Nothing to be returned",
+                cpsPath);
+            return false;
+        }
+        return true;
+    }
+
+    private static DataValidationException createDataValidationException(final String details) {
+        return new DataValidationException("Invalid Query Parameter.", details);
+    }
+
+}
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/inventory/CmHandleQueries.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/inventory/CmHandleQueries.java
index daabbb5..bae0262 100644
--- a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/inventory/CmHandleQueries.java
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/inventory/CmHandleQueries.java
@@ -30,12 +30,22 @@
 public interface CmHandleQueries {
 
     /**
-     * Query CmHandles based on PublicProperties.
+     * Query CmHandles based on additional (private) properties.
+     *
+     * @param additionalPropertyQueryPairs private properties for query
+     * @return CmHandles which have these private properties
+     */
+    Map<String, NcmpServiceCmHandle> queryCmHandleAdditionalProperties(
+            Map<String, String> additionalPropertyQueryPairs);
+
+    /**
+     * Query CmHandles based on public properties.
      *
      * @param publicPropertyQueryPairs public properties for query
      * @return CmHandles which have these public properties
      */
-    Map<String, NcmpServiceCmHandle> queryCmHandlePublicProperties(Map<String, String> publicPropertyQueryPairs);
+    Map<String, NcmpServiceCmHandle> queryCmHandlePublicProperties(
+            Map<String, String> publicPropertyQueryPairs);
 
     /**
      * Combine Maps of CmHandles.
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/inventory/CmHandleQueriesImpl.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/inventory/CmHandleQueriesImpl.java
index e9e2fca..1a54a82 100644
--- a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/inventory/CmHandleQueriesImpl.java
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/inventory/CmHandleQueriesImpl.java
@@ -34,6 +34,7 @@
 import java.util.stream.Collectors;
 import lombok.RequiredArgsConstructor;
 import org.onap.cps.ncmp.api.impl.utils.YangDataConverter;
+import org.onap.cps.ncmp.api.inventory.enums.PropertyType;
 import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle;
 import org.onap.cps.spi.CpsDataPersistenceService;
 import org.onap.cps.spi.FetchDescendantsOption;
@@ -51,16 +52,28 @@
     private static final Map<String, NcmpServiceCmHandle> NO_QUERY_TO_EXECUTE = null;
     private static final String ANCESTOR_CM_HANDLES = "/ancestor::cm-handles";
 
+    @Override
+    public Map<String, NcmpServiceCmHandle> queryCmHandleAdditionalProperties(
+            final Map<String, String> privatePropertyQueryPairs) {
+        return queryCmHandleAnyProperties(privatePropertyQueryPairs, PropertyType.ADDITIONAL);
+    }
 
     @Override
     public Map<String, NcmpServiceCmHandle> queryCmHandlePublicProperties(
             final Map<String, String> publicPropertyQueryPairs) {
-        if (publicPropertyQueryPairs.isEmpty()) {
+        return queryCmHandleAnyProperties(publicPropertyQueryPairs, PropertyType.PUBLIC);
+    }
+
+    private  Map<String, NcmpServiceCmHandle> queryCmHandleAnyProperties(
+            final Map<String, String> propertyQueryPairs,
+            final PropertyType propertyType) {
+        if (propertyQueryPairs.isEmpty()) {
             return Collections.emptyMap();
         }
         Map<String, NcmpServiceCmHandle> cmHandleIdToNcmpServiceCmHandles = null;
-        for (final Map.Entry<String, String> publicPropertyQueryPair : publicPropertyQueryPairs.entrySet()) {
-            final String cpsPath = "//public-properties[@name=\"" + publicPropertyQueryPair.getKey()
+        for (final Map.Entry<String, String> publicPropertyQueryPair : propertyQueryPairs.entrySet()) {
+            final String cpsPath = "//" + propertyType.getYangContainerName() + "[@name=\""
+                    + publicPropertyQueryPair.getKey()
                     + "\" and @value=\"" + publicPropertyQueryPair.getValue() + "\"]";
 
             final Collection<DataNode> dataNodes = queryCmHandleDataNodesByCpsPath(cpsPath, INCLUDE_ALL_DESCENDANTS);
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/inventory/enums/PropertyType.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/inventory/enums/PropertyType.java
new file mode 100644
index 0000000..c3c46c3
--- /dev/null
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/inventory/enums/PropertyType.java
@@ -0,0 +1,34 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2022 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.api.inventory.enums;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public enum PropertyType {
+    ADDITIONAL("additional-properties"),
+    PUBLIC("public-properties"),
+    DMI_PLUGIN("dmiPluginName");
+
+    private final String yangContainerName;
+}
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/models/CmHandleQueryServiceParameters.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/models/CmHandleQueryServiceParameters.java
new file mode 100644
index 0000000..774f04b
--- /dev/null
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/models/CmHandleQueryServiceParameters.java
@@ -0,0 +1,42 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2022 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.api.models;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonInclude.Include;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import java.util.Collections;
+import java.util.List;
+import javax.validation.Valid;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.Setter;
+import org.onap.cps.spi.model.ConditionProperties;
+
+@Setter
+@Getter
+@EqualsAndHashCode
+@JsonInclude(Include.NON_EMPTY)
+public class CmHandleQueryServiceParameters {
+    @JsonProperty("cmHandleQueryParameters")
+    @Valid
+    private List<ConditionProperties> cmHandleQueryParameters = Collections.emptyList();
+}
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyCmHandlerQueryServiceSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyCmHandlerQueryServiceSpec.groovy
index eea53e8..201f6af 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyCmHandlerQueryServiceSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyCmHandlerQueryServiceSpec.groovy
@@ -22,13 +22,14 @@
 
 import org.onap.cps.cpspath.parser.PathParsingException
 import org.onap.cps.ncmp.api.inventory.CmHandleQueries
+import org.onap.cps.ncmp.api.inventory.CmHandleQueriesImpl
 import org.onap.cps.ncmp.api.inventory.InventoryPersistence
+import org.onap.cps.ncmp.api.models.CmHandleQueryServiceParameters
 import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle
 import org.onap.cps.spi.FetchDescendantsOption
 import org.onap.cps.spi.exceptions.DataInUseException
 import org.onap.cps.spi.exceptions.DataValidationException
 import org.onap.cps.spi.model.Anchor
-import org.onap.cps.spi.model.CmHandleQueryServiceParameters
 import org.onap.cps.spi.model.ConditionProperties
 import org.onap.cps.spi.model.DataNode
 import spock.lang.Specification
@@ -38,12 +39,16 @@
 class NetworkCmProxyCmHandlerQueryServiceSpec extends Specification {
 
     def cmHandleQueries = Mock(CmHandleQueries)
-    def inventoryPersistence = Mock(InventoryPersistence)
+    def partiallyMockedCmHandleQueries = Spy(CmHandleQueriesImpl)
+    def mockInventoryPersistence = Mock(InventoryPersistence)
 
     def static someCmHandleDataNode = new DataNode(xpath: '/dmi-registry/cm-handles[@id=\'some-cmhandle-id\']', leaves: ['id':'some-cmhandle-id'])
     def dmiRegistry = new DataNode(xpath: '/dmi-registry', childDataNodes: createDataNodeList(['PNFDemo1', 'PNFDemo2', 'PNFDemo3', 'PNFDemo4']))
 
-    def objectUnderTest = new NetworkCmProxyCmHandlerQueryServiceImpl(cmHandleQueries, inventoryPersistence)
+    static def queryResultCmHandleMap = createCmHandleMap(['H1', 'H2'])
+
+    def objectUnderTest = new NetworkCmProxyCmHandlerQueryServiceImpl(cmHandleQueries, mockInventoryPersistence)
+    def objectUnderTestSpy = new NetworkCmProxyCmHandlerQueryServiceImpl(partiallyMockedCmHandleQueries, mockInventoryPersistence)
 
     def 'Retrieve cm handles with cpsPath when combined with no Module Query.'() {
         given: 'a cmHandleWithCpsPath condition property'
@@ -105,9 +110,9 @@
         and: 'null is returned from the state and public property queries'
             cmHandleQueries.combineCmHandleQueries(*_) >> null
         and: '#scenario from the modules query'
-            inventoryPersistence.queryAnchors(*_) >> returnedAnchors
+            mockInventoryPersistence.queryAnchors(*_) >> returnedAnchors
         and: 'the same cmHandles are returned from the persistence service layer'
-            returnedAnchors.size() * inventoryPersistence.getDataNode(*_) >> returnedCmHandles
+            returnedAnchors.size() * mockInventoryPersistence.getDataNode(*_) >> returnedCmHandles
         when: 'the query is executed for both cm handle ids and details'
             def returnedCmHandlesJustIds = objectUnderTest.queryCmHandleIds(cmHandleQueryParameters)
             def returnedCmHandlesWithData = objectUnderTest.queryCmHandles(cmHandleQueryParameters)
@@ -131,7 +136,7 @@
         and: 'cmHandles are returned from the state and public property combined queries'
             cmHandleQueries.combineCmHandleQueries(*_) >> combinedQueryMap
         and: 'cmHandles are returned from the module names query'
-            inventoryPersistence.queryAnchors(['some-module-name']) >> anchorsForModuleQuery
+            mockInventoryPersistence.queryAnchors(['some-module-name']) >> anchorsForModuleQuery
         and: 'cmHandleQueries returns a datanode result'
             2 * cmHandleQueries.queryCmHandleDataNodesByCpsPath(*_) >> [someCmHandleDataNode]
         when: 'the query is executed for both cm handle ids and details'
@@ -154,9 +159,9 @@
         given: 'We use an empty query'
             def cmHandleQueryParameters = new CmHandleQueryServiceParameters()
         and: 'the inventory persistence returns the dmi registry datanode with just ids'
-            inventoryPersistence.getDataNode("/dmi-registry", FetchDescendantsOption.FETCH_DIRECT_CHILDREN_ONLY) >> dmiRegistry
+            mockInventoryPersistence.getDataNode("/dmi-registry", FetchDescendantsOption.FETCH_DIRECT_CHILDREN_ONLY) >> dmiRegistry
         and: 'the inventory persistence returns the dmi registry datanode with data'
-            inventoryPersistence.getDataNode("/dmi-registry") >> dmiRegistry
+            mockInventoryPersistence.getDataNode("/dmi-registry") >> dmiRegistry
         when: 'the query is executed for both cm handle ids and details'
             def returnedCmHandlesJustIds = objectUnderTest.queryCmHandleIds(cmHandleQueryParameters)
             def returnedCmHandlesWithData = objectUnderTest.queryCmHandles(cmHandleQueryParameters)
@@ -165,13 +170,68 @@
             returnedCmHandlesWithData.stream().map(d -> d.cmHandleId).collect(Collectors.toSet()) == ['PNFDemo1', 'PNFDemo2', 'PNFDemo3', 'PNFDemo4'] as Set
     }
 
+
+    def 'Retrieve all CMHandleIds for empty query parameters' () {
+        given: 'We query without any parameters'
+            def cmHandleQueryParameters = new CmHandleQueryServiceParameters()
+        and: 'the inventoryPersistence returns all four CmHandleIds'
+            mockInventoryPersistence.getDataNode(*_) >> dmiRegistry
+        when: 'the query executed'
+            def resultSet = objectUnderTest.queryCmHandleIdsForInventory(cmHandleQueryParameters)
+        then: 'the size of the result list equals the size of all cmHandleIds.'
+            resultSet.size() == 4
+    }
+
+    def 'Retrieve CMHandleIds when #scenario.' () {
+        given: 'a query object created with #condition'
+            def cmHandleQueryParameters = new CmHandleQueryServiceParameters()
+            def conditionProperties = createConditionProperties(conditionName, [['some-key': 'some-value']])
+            cmHandleQueryParameters.setCmHandleQueryParameters([conditionProperties])
+        and: 'the inventoryPersistence returns different CmHandleIds'
+            partiallyMockedCmHandleQueries.queryCmHandlePublicProperties(*_) >> cmHandlesWithMatchingPublicProperties
+            partiallyMockedCmHandleQueries.queryCmHandleAdditionalProperties(*_) >> cmHandlesWithMatchingPrivateProperties
+        when: 'the query executed'
+            def result = objectUnderTestSpy.queryCmHandleIdsForInventory(cmHandleQueryParameters)
+        then: 'the expected number of results are returned.'
+            assert result.size() == expectedCmHandleIdsSize
+        where: 'the following data is used'
+            scenario                                          | conditionName                | cmHandlesWithMatchingPublicProperties | cmHandlesWithMatchingPrivateProperties || expectedCmHandleIdsSize
+            'all properties, only public matching'            | 'hasAllProperties'           | queryResultCmHandleMap                |  null                                  || 2
+            'all properties, no matching cm handles'          | 'hasAllProperties'           | [:]                                   |  [:]                                   || 0
+            'additional properties, some matching cm handles' | 'hasAllAdditionalProperties' | [:]                                   | queryResultCmHandleMap                 || 2
+            'additional properties, no matching cm handles'   | 'hasAllAdditionalProperties' | null                                  |  [:]                                   || 0
+    }
+
+    def 'Retrieve CMHandleIds by different DMI properties with #scenario.' () {
+        given: 'a query object created with dmi plugin as condition'
+            def cmHandleQueryParameters = new CmHandleQueryServiceParameters()
+            def conditionProperties = createConditionProperties('cmHandleWithDmiPlugin', [['some-key': 'some-value']])
+            cmHandleQueryParameters.setCmHandleQueryParameters([conditionProperties])
+        and: 'the inventoryPersistence returns different CmHandleIds'
+            partiallyMockedCmHandleQueries.getCmHandlesByDmiPluginIdentifier(*_) >> cmHandleQueryResult
+        when: 'the query executed'
+            def result = objectUnderTestSpy.queryCmHandleIdsForInventory(cmHandleQueryParameters)
+        then: 'the expected number of results are returned.'
+            assert result.size() == expectedCmHandleIdsSize
+        where: 'the following data is used'
+            scenario       | cmHandleQueryResult             || expectedCmHandleIdsSize
+            'some matches' | queryResultCmHandleMap.values() || 2
+            'no matches'   | []                              || 0
+    }
+
+    static def createCmHandleMap(cmHandleIds) {
+        def cmHandleMap = [:]
+        cmHandleIds.each{ cmHandleMap[it] = new NcmpServiceCmHandle(cmHandleId : it) }
+        return cmHandleMap
+    }
+
     def createConditionProperties(String conditionName, List<Map<String, String>> conditionParameters) {
         return new ConditionProperties(conditionName : conditionName, conditionParameters : conditionParameters)
     }
 
     def static createDataNodeList(dataNodeIds) {
         def dataNodes =[]
-        dataNodeIds.forEach(id -> {dataNodes.add(new DataNode(xpath: '/dmi-registry/cm-handles[@id=\'' + id + '\']', leaves: ['id':id]))})
+        dataNodeIds.each{ dataNodes << new DataNode(xpath: "/dmi-registry/cm-handles[@id='${it}']", leaves: ['id':it]) }
         return dataNodes
     }
 }
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplSpec.groovy
index 58ca06b..578f7f3 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplSpec.groovy
@@ -33,14 +33,12 @@
 import org.onap.cps.ncmp.api.inventory.LockReasonCategory
 import org.onap.cps.ncmp.api.inventory.DataStoreSyncState
 import org.onap.cps.ncmp.api.models.CmHandleQueryApiParameters
-import org.onap.cps.ncmp.api.models.CmHandleRegistrationResponse
+import org.onap.cps.ncmp.api.models.CmHandleQueryServiceParameters
 import org.onap.cps.ncmp.api.models.ConditionApiProperties
 import org.onap.cps.ncmp.api.models.DmiPluginRegistration
 import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle
 import org.onap.cps.spi.exceptions.CpsException
-import org.onap.cps.spi.exceptions.DataNodeNotFoundException
-import org.onap.cps.spi.exceptions.DataValidationException
-import org.onap.cps.spi.model.CmHandleQueryServiceParameters
+import org.onap.cps.spi.model.ConditionProperties
 import spock.lang.Shared
 import java.util.stream.Collectors
 import org.onap.cps.utils.JsonObjectMapper
@@ -57,10 +55,6 @@
 import static org.onap.cps.ncmp.api.impl.operations.DmiOperations.DataStoreEnum.PASSTHROUGH_RUNNING
 import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum.CREATE
 import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum.UPDATE
-import static org.onap.cps.ncmp.api.models.CmHandleRegistrationResponse.RegistrationError.CM_HANDLE_DOES_NOT_EXIST
-import static org.onap.cps.ncmp.api.models.CmHandleRegistrationResponse.RegistrationError.CM_HANDLE_INVALID_ID
-import static org.onap.cps.ncmp.api.models.CmHandleRegistrationResponse.RegistrationError.UNKNOWN_ERROR
-
 
 class NetworkCmProxyDataServiceImplSpec extends Specification {
 
@@ -202,6 +196,23 @@
             result == [ 'public prop' : 'some public prop' ]
     }
 
+    def 'Execute cm handle id search for inventory'() {
+        given: 'a ConditionApiProperties object'
+            def conditionProperties = new ConditionProperties()
+            conditionProperties.conditionName = 'hasAllProperties'
+            conditionProperties.conditionParameters = [ [ 'some-key' : 'some-value' ] ]
+            def conditionServiceProps = new CmHandleQueryServiceParameters()
+            conditionServiceProps.cmHandleQueryParameters = [conditionProperties] as List<ConditionProperties>
+        and: 'the system returns an set of cmHandle ids'
+            mockCpsCmHandlerQueryService.queryCmHandleIdsForInventory(*_) >> [ 'cmHandle1', 'cmHandle2' ]
+        when: 'getting cm handle id set for a given dmi property'
+            def result = objectUnderTest.executeCmHandleIdSearchForInventory(conditionServiceProps)
+        then: 'the result returns the correct 2 elements'
+            assert result.size() == 2
+            assert result.contains('cmHandle1')
+            assert result.contains('cmHandle2')
+    }
+
     def 'Get cm handle composite state'() {
         given: 'a yang modelled cm handle'
             def compositeState = new CompositeState(cmHandleState: CmHandleState.ADVISED,
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/async/CpsAsyncRequestResponseEventIntegrationSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/async/CpsAsyncRequestResponseEventIntegrationSpec.groovy
index 31f179a..51162c7 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/async/CpsAsyncRequestResponseEventIntegrationSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/async/CpsAsyncRequestResponseEventIntegrationSpec.groovy
@@ -23,7 +23,7 @@
 import com.fasterxml.jackson.databind.ObjectMapper
 import org.apache.kafka.clients.consumer.KafkaConsumer
 import org.mapstruct.factory.Mappers
-import org.onap.cps.ncmp.api.utils.MessagingSpec
+import org.onap.cps.ncmp.api.kafka.MessagingBaseSpec
 import org.onap.cps.ncmp.event.model.DmiAsyncRequestResponseEvent
 import org.onap.cps.ncmp.event.model.NcmpAsyncRequestResponseEvent
 import org.onap.cps.ncmp.utils.TestUtils
@@ -39,7 +39,7 @@
 @SpringBootTest(classes = [NcmpAsyncRequestResponseEventProducer, NcmpAsyncRequestResponseEventConsumer, ObjectMapper, JsonObjectMapper])
 @Testcontainers
 @DirtiesContext
-class NcmpAsyncRequestResponseEventProducerIntegrationSpec extends MessagingSpec {
+class NcmpAsyncRequestResponseEventProducerIntegrationSpec extends MessagingBaseSpec {
 
     @SpringBean
     NcmpAsyncRequestResponseEventProducer cpsAsyncRequestResponseEventProducerService =
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/event/lcm/LcmEventsPublisherSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/event/lcm/LcmEventsPublisherSpec.groovy
index c7e6b6d..61bf33d 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/event/lcm/LcmEventsPublisherSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/event/lcm/LcmEventsPublisherSpec.groovy
@@ -22,7 +22,7 @@
 
 import com.fasterxml.jackson.databind.ObjectMapper
 import org.apache.kafka.clients.consumer.KafkaConsumer
-import org.onap.cps.ncmp.api.utils.MessagingSpec
+import org.onap.cps.ncmp.api.kafka.MessagingBaseSpec
 import org.onap.cps.ncmp.utils.TestUtils
 import org.onap.cps.utils.JsonObjectMapper
 import org.onap.ncmp.cmhandle.event.lcm.Event
@@ -38,7 +38,7 @@
 @SpringBootTest(classes = [LcmEventsPublisher, ObjectMapper, JsonObjectMapper])
 @Testcontainers
 @DirtiesContext
-class LcmEventsPublisherSpec extends MessagingSpec {
+class LcmEventsPublisherSpec extends MessagingBaseSpec {
 
     def kafkaConsumer = new KafkaConsumer<>(consumerConfigProperties('ncmp-group'))
 
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/CmHandleQueryConditionsSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/CmHandleQueryConditionsSpec.groovy
new file mode 100644
index 0000000..f0e2d9f
--- /dev/null
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/CmHandleQueryConditionsSpec.groovy
@@ -0,0 +1,35 @@
+/*
+ * ============LICENSE_START========================================================
+ * Copyright (c) 2022 Nordix Foundation.
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an 'AS IS' BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.api.impl.utils
+
+import spock.lang.Specification
+
+class CmHandleQueryConditionsSpec extends Specification {
+
+    def 'CmHandle query condition names.'() {
+        expect: '3 conditions with the correct names'
+            assert CmHandleQueryConditions.ALL_CONDITION_NAMES.size() == 3
+            assert CmHandleQueryConditions.ALL_CONDITION_NAMES.containsAll('hasAllProperties',
+                                                                           'hasAllModules',
+                                                                           'cmHandleWithCpsPath')
+    }
+
+}
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/utils/DmiServiceUrlBuilderSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/DmiServiceUrlBuilderSpec.groovy
similarity index 97%
rename from cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/utils/DmiServiceUrlBuilderSpec.groovy
rename to cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/DmiServiceUrlBuilderSpec.groovy
index 09f4550..0156988 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/utils/DmiServiceUrlBuilderSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/DmiServiceUrlBuilderSpec.groovy
@@ -18,7 +18,7 @@
  *  ============LICENSE_END=========================================================
  */
 
-package org.onap.cps.ncmp.api.utils
+package org.onap.cps.ncmp.api.impl.utils
 
 import org.onap.cps.spi.utils.CpsValidator
 
@@ -26,7 +26,6 @@
 
 import org.onap.cps.ncmp.api.impl.yangmodels.YangModelCmHandle
 import org.onap.cps.ncmp.api.impl.config.NcmpConfiguration
-import org.onap.cps.ncmp.api.impl.utils.DmiServiceUrlBuilder
 import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle
 import spock.lang.Shared
 import spock.lang.Specification
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/InventoryQueryConditionsSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/InventoryQueryConditionsSpec.groovy
new file mode 100644
index 0000000..00edb8d
--- /dev/null
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/InventoryQueryConditionsSpec.groovy
@@ -0,0 +1,36 @@
+/*
+ * ============LICENSE_START========================================================
+ * Copyright (c) 2022 Nordix Foundation.
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an 'AS IS' BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.api.impl.utils
+
+import spock.lang.Specification
+
+class InventoryQueryConditionsSpec extends Specification {
+
+    def 'Inventory query condition names.'() {
+        expect: '3 conditions with the correct names'
+            assert InventoryQueryConditions.ALL_CONDITION_NAMES.size() == 3
+            assert InventoryQueryConditions.ALL_CONDITION_NAMES.containsAll('hasAllProperties',
+                                                                            'hasAllAdditionalProperties',
+                                                                            'cmHandleWithDmiPlugin')
+    }
+
+
+}
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/RestQueryParametersValidatorSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/RestQueryParametersValidatorSpec.groovy
new file mode 100644
index 0000000..e1055bb
--- /dev/null
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/RestQueryParametersValidatorSpec.groovy
@@ -0,0 +1,125 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2022 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.api.impl.utils
+
+import org.onap.cps.ncmp.api.models.CmHandleQueryServiceParameters
+import org.onap.cps.spi.exceptions.DataValidationException
+import org.onap.cps.spi.model.ConditionProperties
+import spock.lang.Specification
+
+class RestQueryParametersValidatorSpec extends Specification {
+
+
+    def 'CM Handle Query validation: empty query.'() {
+        given: 'a cm handle query'
+            def cmHandleQueryParameters = new CmHandleQueryServiceParameters()
+        when: 'validator is invoked'
+            RestQueryParametersValidator.validateCmHandleQueryParameters(cmHandleQueryParameters, [])
+        then: 'data validation exception is not thrown'
+            noExceptionThrown()
+    }
+
+    def 'CM Handle Query validation: normal query.'() {
+        given: 'a cm handle query'
+            def cmHandleQueryParameters = new CmHandleQueryServiceParameters()
+            def condition = new ConditionProperties()
+            condition.conditionName = 'validConditionName'
+            condition.conditionParameters = [['key':'value']]
+        cmHandleQueryParameters.cmHandleQueryParameters = [condition]
+        when: 'validator is invoked'
+            RestQueryParametersValidator.validateCmHandleQueryParameters(cmHandleQueryParameters, ['validConditionName'])
+        then: 'data validation exception is not thrown'
+            noExceptionThrown()
+    }
+
+    def 'CM Handle Query validation: #scenario.'() {
+        given: 'a cm handle query'
+            def cmHandleQueryParameters = new CmHandleQueryServiceParameters()
+            def condition = new ConditionProperties()
+            condition.conditionName = conditionName
+            condition.conditionParameters = conditionParameters
+            cmHandleQueryParameters.cmHandleQueryParameters = [condition]
+        when: 'validator is invoked'
+            RestQueryParametersValidator.validateCmHandleQueryParameters(cmHandleQueryParameters, ['validConditionName'])
+        then: 'a data validation exception is thrown'
+            def thrown = thrown(DataValidationException)
+        and: 'the exception details contain the correct significant term '
+            thrown.details.contains(expectedWordInDetails)
+        where:
+            scenario                 | conditionName        | conditionParameters              || expectedWordInDetails
+            'unknown condition name' | 'unknownCondition'   | [['key':'value']]                  || 'conditionName'
+            'no condition name'      | ''                   | [['key':'value']]                  || 'conditionName'
+            'empty properties'       | 'validConditionName' | [[ : ]]                          || 'conditionsParameter'
+            'empty conditions'       | 'validConditionName' | [[:]]                               || 'conditionsParameter'
+            'too many properties'    | 'validConditionName' | [[key1:'value1', key2:'value2']] || 'conditionsParameter'
+            'empty key'              | 'validConditionName' | [['':'wrong']]                   || 'conditionsParameter'
+    }
+
+    def 'CM Handle Query validation: validate module name condition properties - valid query.'() {
+        given: 'a condition property'
+            def conditionProperty = [moduleName: 'value']
+        when: 'validator is invoked'
+            RestQueryParametersValidator.validateModuleNameConditionProperties(conditionProperty)
+        then: 'data validation exception is not thrown'
+            noExceptionThrown()
+    }
+
+    def 'CM Handle Query validation: validate module name condition properties - #scenario.'() {
+        when: 'validator is invoked'
+            RestQueryParametersValidator.validateModuleNameConditionProperties(conditionProperty)
+        then: 'a data validation exception is thrown'
+            thrown(DataValidationException)
+        where:
+            scenario        | conditionProperty
+            'invalid value' | [moduleName: '']
+            'invalid name'  | [wrongName: 'value']
+    }
+
+    def 'Validate CmHandle where an exception is thrown due to #scenario.'() {
+        when: 'the validator is called on a cps path condition property'
+            RestQueryParametersValidator.validateCpsPathConditionProperties(conditionProperty)
+        then: 'a data validation exception is thrown'
+            def e = thrown(DataValidationException)
+        and: 'exception message matches the expected message'
+            e.details.contains(exceptionMessage)
+        where:
+            scenario                              | conditionProperty                               || exceptionMessage
+            'more than one condition is supplied' | ['cpsPath':'some-path', 'cpsPath2':'some-path'] || 'Only one condition property is allowed for the CPS path query.'
+            'cpsPath key not supplied'            | ['wrong-key':'some-path']                       || 'Wrong CPS path condition property. - expecting "cpsPath" as the condition property.'
+            'cpsPath not supplied'                | ['cpsPath':'']                                  || 'Wrong CPS path. - please supply a valid CPS path.'
+    }
+
+    def 'No conditions.'() {
+        expect: 'no conditions always returns true'
+            RestQueryParametersValidator.validateCpsPathConditionProperties([:]) == true
+    }
+
+    def 'Validate CmHandle where #scenario.'() {
+        when: 'the validator is called on a cps path condition property'
+            def result = RestQueryParametersValidator.validateCpsPathConditionProperties(['cpsPath':cpsPath])
+        then: 'the expected boolean value is returned'
+            result == expectedBoolean
+        where:
+            scenario                                       | cpsPath                                                || expectedBoolean
+            'cpsPath is valid'                             | '/some/valid/path'                                     || true
+            'cpsPath attempts to query private properties' | "//additional-properties[@some-property='some-value']" || false
+    }
+}
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/utils/YangDataConverterSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/YangDataConverterSpec.groovy
similarity index 95%
rename from cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/utils/YangDataConverterSpec.groovy
rename to cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/YangDataConverterSpec.groovy
index 20d384f..3ef3df5 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/utils/YangDataConverterSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/YangDataConverterSpec.groovy
@@ -18,9 +18,8 @@
  *  ============LICENSE_END=========================================================
  */
 
-package org.onap.cps.ncmp.api.utils
+package org.onap.cps.ncmp.api.impl.utils
 
-import org.onap.cps.ncmp.api.impl.utils.YangDataConverter
 import org.onap.cps.spi.model.DataNode
 import spock.lang.Specification
 
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/CmHandleQueriesImplSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/CmHandleQueriesImplSpec.groovy
index 752b9f3..2800f5c 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/CmHandleQueriesImplSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/CmHandleQueriesImplSpec.groovy
@@ -37,10 +37,13 @@
     @Shared
     def static sampleDataNodes = [new DataNode()]
 
+    def dataNodeWithPrivateField = '//additional-properties[@name=\"Contact3\" and @value=\"newemailforstore3@bookstore.com\"]/ancestor::cm-handles'
+
     def static pnfDemo = createDataNode('PNFDemo')
     def static pnfDemo2 = createDataNode('PNFDemo2')
     def static pnfDemo3 = createDataNode('PNFDemo3')
     def static pnfDemo4 = createDataNode('PNFDemo4')
+    def static pnfDemo5 = createDataNode('PNFDemo5')
 
     def static pnfDemoCmHandle = new NcmpServiceCmHandle(cmHandleId: 'PNFDemo')
     def static pnfDemo2CmHandle = new NcmpServiceCmHandle(cmHandleId: 'PNFDemo2')
@@ -69,6 +72,22 @@
             returnedCmHandlesWithData.keySet().size() == 0
     }
 
+    def 'Query CmHandles using empty private properties query pair.'() {
+        when: 'a query on CmHandle private properties is executed using an empty map'
+            def returnedCmHandlesWithData = objectUnderTest.queryCmHandleAdditionalProperties([:])
+        then: 'no cm handles are returned'
+            returnedCmHandlesWithData.keySet().size() == 0
+    }
+
+    def 'Query CmHandles by a private field\'s value.'() {
+        given: 'a data node exists with a certain additional-property'
+            cpsDataPersistenceService.queryDataNodes(_, _, dataNodeWithPrivateField, _) >> [pnfDemo5]
+        when: 'a query on CmHandle private properties is executed using a map'
+            def returnedCmHandlesWithData = objectUnderTest.queryCmHandleAdditionalProperties(['Contact3': 'newemailforstore3@bookstore.com'])
+        then: 'one cm handle is returned'
+            returnedCmHandlesWithData.keySet().size() == 1
+    }
+
     def 'Combine two query results where #scenario.'() {
         when: 'two query results in the form of a map of NcmpServiceCmHandles are combined into a single query result'
             def result = objectUnderTest.combineCmHandleQueries(firstQuery, secondQuery)
@@ -85,7 +104,7 @@
             'both queries are null'                                      | null                                                       | null                                                       || null
     }
 
-    def 'Get Cm Handles By State'() {
+    def 'Get CmHandles by it\'s state.'() {
         given: 'a cm handle state to query'
             def cmHandleState = CmHandleState.ADVISED
         and: 'the persistence service returns a list of data nodes'
@@ -97,6 +116,22 @@
             assert result == sampleDataNodes
     }
 
+    def 'Check the state of a cmHandle when #scenario.'() {
+        given: 'a cm handle state to compare'
+            def cmHandleState = state
+        and: 'the persistence service returns a list of data nodes'
+            cpsDataPersistenceService.getDataNode('NCMP-Admin', 'ncmp-dmi-registry',
+                    '/dmi-registry/cm-handles[@id=\'some-cm-handle\']/state', OMIT_DESCENDANTS) >> new DataNode(leaves: ['cm-handle-state': 'READY'])
+        when: 'cm handles are compared by state'
+            def result = objectUnderTest.cmHandleHasState('some-cm-handle', cmHandleState)
+        then: 'the returned result matches the expected result from the persistence service'
+            result == expectedResult
+        where:
+            scenario                           | state                 || expectedResult
+            'the provided state matches'       | CmHandleState.READY   || true
+            'the provided state does not match'| CmHandleState.DELETED || false
+    }
+
     def 'Get Cm Handles state by Cm-Handle Id'() {
         given: 'a cm handle state to query'
             def cmHandleState = CmHandleState.READY
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/utils/MessagingSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/kafka/MessagingBaseSpec.groovy
similarity index 96%
rename from cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/utils/MessagingSpec.groovy
rename to cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/kafka/MessagingBaseSpec.groovy
index 712c2b8..f7c41ec 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/utils/MessagingSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/kafka/MessagingBaseSpec.groovy
@@ -18,7 +18,7 @@
  *  ============LICENSE_END=========================================================
  */
 
-package org.onap.cps.ncmp.api.utils
+package org.onap.cps.ncmp.api.kafka
 
 import org.apache.kafka.common.serialization.StringDeserializer
 import org.apache.kafka.common.serialization.StringSerializer
@@ -31,7 +31,7 @@
 import org.testcontainers.utility.DockerImageName
 import spock.lang.Specification
 
-class MessagingSpec extends Specification {
+class MessagingBaseSpec extends Specification {
 
     static {
         Runtime.getRuntime().addShutdownHook(new Thread(kafkaTestContainer::stop))