Ending the APPC conversation

You can end a conversation using LU 6.2 devices by issuing the CPI-C verb, DEALLOCATE, or by inserting a blank transaction code into the SPA for IMS conversational transactions.

Restriction: You cannot use the /EXIT command for LU 6.2 conversations.

Several error conditions can exist at the end of an LU 6.2 conversation:

  • If your application program sends data to the LU 6.2 device just before deallocating conversation, IMS TM issues a SENDERROR and SENDDATA of the DFS1966 error message. This indicates that the transaction ended, but that the last message could not be delivered. For SENDERROR to be activated, specify a synchronization level of CONFIRM.
  • If IMS TM encounters an error sending output from an IMS TM conversational transaction to the LU 6.2 device, the output is discarded, and the conversation is terminated for both IMS TM and LU 6.2.
  • If an IMS TM conversational application program abends during an LU 6.2 conversation, a DFS555 error message is sent to the originating LU 6.2 device, and the conversation is terminated for both IMS TM and LU 6.2.