Request-status message segment

If a transaction request is accepted, the IMS™ Listener does not send the request-status message segment; if the transaction request is rejected, the IMS Listener sends a request-status message segment (RSM) to the client. This segment has the following format:

Field	Format	Description
RSMLen	H	Length of message (in binary), including this field.
RSMRsv	CL2	Reserved
RSMId	CL8	Identifying string. Always REQSTS. This field is translated to ASCII if the Listener has determined that the client is transmitting in ASCII.
F	Return code, sent in network byte order. Set to nonzero (for example, 4, 8, 12) to indicate an error. The nonzero value is further explained by the reason code (RSMRsnCod).
RSMRsnCod	F	Reason Code, sent in network byte order. Reason codes 0 — 100 are reserved for use by the IMS Listener. Codes greater than 100 can be assigned by the user-written security exit.