Resetting the active process: RAP FM header
The reset attached process (RAP) FM header is used to reset the receiving half session's active process and all session states, except bracket and send/receive states, to the equivalent of a between-brackets state.
IMS receives the
RAP FM header, but does not send it. After receiving the RAP request, IMS responds with an ATTACH SCHEDULER,
or with LUSTATUS - queue empty if no output is available
to be sent. If the RAP request is received during an IMS demand-paged output message, the message
is dequeued (committed) before a check for more output is made. The IMS operation performed for the RAP
request is the same as for the NEXTMSG operator control request provided
with MFS input or the PA2 request from a 3270 device.
The RAP request must be sent without data and must indicate change-direction, RQD2, or RQE2.
The following figure illustrates the use of the RAP FM header.
