ATTDQN and ATTDP

The destination queue name (ATTDQN) parameter names a specific message instance. This parameter is valid only for output MFS demand-paged messages.

For MFS demand-paged output, ATTDQN is sent by IMS as an output message identifier. This name can then be used by the other half session as the QNAME parameter within paging requests to access the IMS demand-paged output message. Within IMS, only one message can be active for a given session at any one time. This means that after output paging begins on a message and until the paging operation is terminated, all input must be paging requests indicating the same QNAME (from ATTDQN) value. The session-local flag (ATTDP) in the ATTACH FM header is set to 1. ATTDQN and ATTDP are not sent or received under other conditions.