Send and receive messages between 2 pools back and forth

Please help me , I want both pool to send and receive message from each pool.

I have 2 pools that each send a message to the other pool but they fail upon starting them on camunda, I attached my BPMN

Pool1 first task send a message to pool 2 start event.
Task 1 expression ${execution.getProcessEngineServices().getRuntimeService().createMessageCorrelation(“requestA”).correlateWithResult()}

pool 2 recives a message at start event. configuration Message name= requestA

Pool 2 then also send message to A
pool 2 task configuration ${execution.getProcessEngineServices().getRuntimeService().createMessageCorrelation(“requestB”).correlateWithResult()}

Pool 1 receive the message task configuration Message name = requestB

upon starting it on camunda it fails with the error below

The process could not be started. :
Cannot instantiate process definition Process_1:1:0245b319-7173-11e8-8869-402cf4108c7d: Error while evaluating expression: ${execution.getProcessEngineServices().getRuntimeService().createMessageCorrelation(“requestA”).correlateWithResult()}. Cause: org.camunda.bpm.engine.MismatchingMessageCorrelationException: Cannot correlate message ‘requestA’: No process definition or execution matches the parameters

MessageReceive.bpmn (6.8 KB)


You need to select Executable on the pool or it wont be deployed.
If it’s not deployed then the message would fail.

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