QSTATUS FM header

A QSTATUS FM header is sent by IMS in reply to an input QPURGE FM header or because an invalid cursor was detected on a page request for a demand-paged output.

If a QSTATUS results from a QPURGE during demand-paged output, it is sent to request a sync point. The message is dequeued when the sync-point response is received. The message is returned to the queue and made available for retransmission if an exception sync-point response is received.

A QSTATUS resulting from an invalid cursor during scheduled demand-paged output is sent RQE1/CD and allows a subsequent QGETN to again request the first page of the message or a QPURGE to cause the message to be dequeued.

The QSTATUS FM header is the only FM header in the chain and is not followed by function management data. The QSTATUS FM header must not be sent to IMS.