AAOP


    Explanation
      The CPI Communications state machine has been requested to perform a state transition request that is considered to be an 'impossible' situation. (The z/VM: CPI Communications User's Guide manual, (SC26-4399) documents all these situations.)

      There are two possible causes of this error:

      
        
          The CPC (conversation control block) has been overwritten in such a way that the conversation state has been altered, or

        

        
          There is an error in the CPI Communications state machine.

        

      

    

    System action
      The transaction is abnormally terminated with a CICS transaction dump.

    

    User response
      A level 2 trace for 'CP' of the transaction shows the course of events prior to this error, for example, the modules called and their parameters. The level 2 trace also provides details of the error itself.

      The transaction dump shows the CPC. You may need further assistance from IBM to fully resolve this problem. See
Working with IBM to solve your problem
for guidance on how to proceed.
      

    

    Module
DFHCPCFS