"No matching activity were found for given message null"
<br/><br/>Hi, I have received this message from the BPEL engine at the Petals log some times... I wasn't able to grasp a pattern responsible for the problem.
<br/><br/>The message appears just after a process invocation and the client side stays waiting for an answer that never comes.
<br/><br/>Is there a simple meaning to this message occurrence? 
<br/><br/>Thank you
<br/>Leonardo Leite
<br/>IME - USP
        
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