On request of ANT build we receive above error message.
We run the build with preconfigured/specific user ID. This user ID is associated with role which doesn't have permissions to either save or modify build engine, build definition.

I would like to know what dependency is it having with these permissions.
Our ANT script is neither trying to create/modify build engine.

Detailed log:
CRJAZ6053E The 'Save Build Engine' operation cannot be completed. Permission is required to complete the operation. kann nicht aktualisiert werden.
[startBuildActivity] com.ibm.team.process.common.advice.TeamOperationCanceledException: CRJAZ6053E The 'Save Build Engine' operation cannot be completed. Permission is required to complete the operation.
[startBuildActivity]     at com.ibm.team.process.internal.common.advice.runtime.OperationAdviceManager.advise(OperationAdviceManager.java:388)
[startBuildActivity]     at com.ibm.team.process.internal.common.util.AbstractProcess.doAdvise(AbstractProcess.java:197)
[startBuildActivity]     at com.ibm.team.process.internal.service.ServerProcess.access$2(ServerProcess.java:1)
...
...
[startBuildActivity]     at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
[startBuildActivity]     Name: Save Build Engine
[startBuildActivity]     ID: com.ibm.team.build.server.saveBuildEngine
[startBuildActivity]     Dringlichkeit: FEHLER
[startBuildActivity]         Zusammenfassung: Permission Denied
[startBuildActivity]         Beschreibung: You don't have permission to perform the following actions:
[startBuildActivity]   Modify Build Engine (modify)
[startBuildActivity]         Dringlichkeit: FEHLER