Response requests (SLU P)

Except for replies to all but the last physical or logical page of non-operator, logical-paged MFS output, output messages from IMS require specific responses. IMS commands, broadcast output, message switches, and non-Fast Path transactions defined to IMS as update-inquiry or recoverable-inquiry require a DR2.

Because an explicit MFS control or data input must follow each page before another page of output is allowed (or the message is dequeued), transactions defined to IMS as irrecoverable-inquiry and replies to operator logical-paged MFS output require an exception DR2. MFS-paged output, except the last physical page of a message whose MOD does not specify PAGE=YES, requests an exception DR2 reply regardless of how the transaction is defined.