diff --git a/asdc-controller/src/test/resources/schema.sql b/asdc-controller/src/test/resources/schema.sql
index 1260461..83be71e 100644
--- a/asdc-controller/src/test/resources/schema.sql
+++ b/asdc-controller/src/test/resources/schema.sql
@@ -651,7 +651,7 @@
   `TOSCA_NODE_TYPE` varchar(200) DEFAULT NULL,
   `AIC_VERSION_MIN` varchar(20) NULL,
   `AIC_VERSION_MAX` varchar(20) DEFAULT NULL,
-  `ORCHESTRATION_MODE` varchar(20) DEFAULT 'HEAT',
+  `ORCHESTRATION_MODE` varchar(20) NOT NULL DEFAULT 'HEAT',
   `CREATION_TIMESTAMP` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
   `RESOURCE_CATEGORY` varchar(200) DEFAULT NULL,
   `RESOURCE_SUB_CATEGORY` varchar(200) DEFAULT NULL,
@@ -961,8 +961,8 @@
   `ID` int(13) NOT NULL AUTO_INCREMENT,
   `MODEL_CUSTOMIZATION_UUID` varchar(200) NOT NULL,
   `LABEL` varchar(200) DEFAULT NULL,
-  `INITIAL_COUNT` int(11) DEFAULT '0',
-  `MIN_INSTANCES` int(11) DEFAULT '0',
+  `INITIAL_COUNT` int(11) NOT NULL DEFAULT '0',
+  `MIN_INSTANCES` int(11) NOT NULL DEFAULT '0',
   `MAX_INSTANCES` int(11) DEFAULT NULL,
   `AVAILABILITY_ZONE_COUNT` int(11) DEFAULT NULL,
   `HEAT_ENVIRONMENT_ARTIFACT_UUID` varchar(200) DEFAULT NULL,
@@ -1230,7 +1230,7 @@
   `RESOURCE_TARGET` varchar(200) NOT NULL,
   `SOURCE` varchar(200) NOT NULL,
   `TIMEOUT_MINUTES` int(11) DEFAULT NULL,
-  `ARTIFACT_CHECKSUM` varchar(200) DEFAULT 'MANUAL RECORD',
+  `ARTIFACT_CHECKSUM` varchar(200) NULL DEFAULT 'MANUAL RECORD',
   `CREATION_TIMESTAMP` datetime NOT NULL DEFAULT current_timestamp(),
   PRIMARY KEY (`ID`),
   UNIQUE KEY `UK_workflow` (`ARTIFACT_UUID`,`NAME`,`VERSION`,`SOURCE`)
