Exceptions thrown on a multi instance sub process with asynchronous property

Description

I modeled a process with a sub process in it.
Inside this sub process I have a Service Task.
The sub process runs on a no sequential loop.
The service task is asynchronous.
I got the following exception :
Exception in thread "pool-1-thread-11" org.activiti.engine.ActivitiOptimisticLockingException: VariableInstanceEntity[2036] was updated by another transaction

The process retries the Service Task in error.

Please find the project and a JUnit test in attachment.

Environment

Windows XP, Eclipse 3.6, Java 6.

Assignee

Unassigned

Reporter

Jean-S_bastien Scr_ve

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Priority

Major
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