diff --git a/asdctool/pom.xml b/asdctool/pom.xml
index 9a6ef22..010edce 100644
--- a/asdctool/pom.xml
+++ b/asdctool/pom.xml
@@ -663,6 +663,35 @@
 					</execution>
 				</executions>
 			</plugin>
+			<plugin>
+				<groupId>com.github.sylvainlaurent.maven</groupId>
+				<artifactId>yaml-json-validator-maven-plugin</artifactId>
+				<executions>
+					<execution>
+						<id>validate</id>
+						<phase>validate</phase>
+						<goals>
+							<goal>validate</goal>
+						</goals>
+						<configuration>
+							<validationSets>
+								<validationSet>
+									<includes>
+										<include>src/main/resources/**/*.y*ml</include>
+										<include>src/test/resources/**/*.y*ml</include>
+									</includes>
+								</validationSet>
+								<validationSet>
+									<includes>
+										<include>src/main/resources/**/*.json</include>
+										<include>src/test/resources/**/*.json</include>
+									</includes>
+								</validationSet>
+							</validationSets>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
 		</plugins>
 	</build>
 	<profiles>
diff --git a/asdctool/src/test/resources/graphError.json b/asdctool/src/test/resources/graphError.json
index b7ccf92..a5a51d6 100644
--- a/asdctool/src/test/resources/graphError.json
+++ b/asdctool/src/test/resources/graphError.json
@@ -1 +1 @@
-(("ERRRRORROROR{{{\"container\":zxcvfxcvxcvxc{\"accessContcxvxcvrolPolicyIDs\":[\"/in-cse/acp-7cxvxcvxcvx1663881\"],\"creationTime\":\"20170630T111742\",\"currentByteSize\":0,\"currentNrOfInstances\":0,\"expirationTime\":\"20180630T111742\",\"lastModifiedTime\":\"20170630T111742\",\"latest\":\"/in-cse/in-name/cnt_900407520/la\",\"maxByteSize\":10000,\"maxInstanceAge\":0,\"maxNrOfInstances\":10,\"oldest\":\"/in-cse/in-name/cnt_900407520/ol\",\"parentID\":\"/in-cse\",\"resourceID\":\"/in-cse/cnt-900407520\",\"resourceName\":((\"cnt_900407520\",\"resourceTypeR\"RXCFV:\"int3\",\"stateTag\":0}}"
\ No newline at end of file
+"ERRRRORROROR{{{\"container\":zxcvfxcvxcvxc{\"accessContcxvxcvrolPolicyIDs\":[\"/in-cse/acp-7cxvxcvxcvx1663881\"],\"creationTime\":\"20170630T111742\",\"currentByteSize\":0,\"currentNrOfInstances\":0,\"expirationTime\":\"20180630T111742\",\"lastModifiedTime\":\"20170630T111742\",\"latest\":\"/in-cse/in-name/cnt_900407520/la\",\"maxByteSize\":10000,\"maxInstanceAge\":0,\"maxNrOfInstances\":10,\"oldest\":\"/in-cse/in-name/cnt_900407520/ol\",\"parentID\":\"/in-cse\",\"resourceID\":\"/in-cse/cnt-900407520\",\"resourceName\":((\"cnt_900407520\",\"resourceTypeR\"RXCFV:\"int3\",\"stateTag\":0}}"
\ No newline at end of file