[ https://issues.jboss.org/browse/WFCORE-2768?page=com.atlassian.jira.plugi... ] Brian Stansberry commented on WFCORE-2768: ------------------------------------------ This means the OperationStepHandlers for this are not taking the necessary steps to prevent concurrent execution. Most likely the OSH is doing this context.getServiceRegistry(false) when it should be context.getServiceRegistry(true) The 'modify' param must be 'true' if the thread will make any sort of modification to any object accessed via that call -- the ServiceRegistry, any ServiceController or other MSC object obtained from it, as well as the Service and the value object read from the ServiceController. In this case the value object being the CredentialStore. The meaning of that 'modify' param *is not limited to modifications to the service registry itself*. -- This message was sent by Atlassian JIRA (v7.2.3#72005)