ATTDPN

This field, when sent by CICS to IMS, contains the name of an IMS editor (basic edit or ISC edit) or an MFS MID name that is to receive the inbound message. When received by CICS in a reply from IMS, this field contains the value that CICS sent to IMS as the return destination process name field (ATTRDPN) on the originating outbound message. If this is a reply to a nonresponse or nonconversational message sent to IMS with SEND LAST, this field identifies the transaction to be initiated to process this reply. In other cases, this value can be a CICS transaction code that identifies a restart transaction. If this value is not available, CICS uses the first four characters of the incoming data stream as the transaction code. If the reply is returned on the same session as that of the incoming message, IMS system code automatically wraps the incoming RDPN field into the DPN field of the reply message.

CICS ignores the ATTDPN if it is received in a reply returned from IMS.

When used with the SCHEDULER, the ATTDPN contains the DPN of the SCHEDULER model. In this case, the remaining ATTACH parameters are not sent by IMS, but rather, the information is supplied on the associated SCHEDULER model parameters.