Cannot start a process with Multi-valued CorrelationKey because of RuntimeException: CorrelationKey [XXX] already exists

Issue

• Though correlation key is not present in DB(correlationkeyinfo and correltionpropertyinfo), we are getting message as correlation key already exists.

java.lang.RuntimeException: CorrelationKey [name=null, properties=[CorrelationPropertyInfo [name=null, value=ABC], CorrelationPropertyInfo [name=null, value=DEF], CorrelationPropertyInfo [name=null, value=GHI]]] already exists
    at org.jbpm.persistence.JpaProcessPersistenceContext.persist(JpaProcessPersistenceContext.java:119)
    at org.jbpm.persistence.processinstance.JPAProcessInstanceManager.addProcessInstance(JPAProcessInstanceManager.java:90)
    at org.jbpm.process.instance.AbstractProcessInstanceFactory.createProcessInstance(AbstractProcessInstanceFactory.java:47)
    at org.jbpm.process.instance.ProcessRuntimeImpl.startProcess(ProcessRuntimeImpl.java:258)
    at org.jbpm.process.instance.ProcessRuntimeImpl.createProcessInstance(ProcessRuntimeImpl.java:240)
    at org.jbpm.process.instance.ProcessRuntimeImpl.startProcess(ProcessRuntimeImpl.java:223)
    at org.drools.core.impl.StatefulKnowledgeSessionImpl.startProcess(StatefulKnowledgeSessionImpl.java:1884)