VTAM reason codes (for CSA)

Reason code: Explanation
0: Data is being passed to the read queue exit routine.
MB_ERR_CMIP_SERVICES_INACTIVE: CMIP services has terminated. Signal the application program main task to issue the MIBDisconnect function. No data is passed for this reason code.

Note: Your read queue exit routine should be coded to ignore unrecognized reason codes and set the return code to 0.

For a reason code of zero, copy any data presented from CSA storage to private storage. Then queue the copied data to the appropriate task. CMIP services examines the return code only if the read queue exit routine is driven with a reason code of 0. Set register 15 as follows:

Return code: Explanation
0: The read queue exit routine was successful.
8: The read queue exit routine had a temporary internal processing failure; for example, it is out of storage.
CMIP services builds an ROER if the message passed to the exit is a confirmed request of type ROIVapdu. The read queue exit routine continues to function.
16: The read queue exit routine had a permanent internal processing failure.
CMIP services builds an ROER if the message passed to the exit routine is a confirmed request of type ROIVapdu. It also builds these ROERs for any subsequent confirmed ROIV requests until the application program disconnects from the API. The read queue exit routine does not continue to receive data. It is driven again only if CMIP services terminates of if application program calls the MIBDisconnect function and then calls the MIBConnect function again.