Output messages accepted by MFS

Whether an output message is processed by IMS TM basic edit or MFS depends on the device type, the device definition, and the message being processed.

Output messages to SLU 2 and 3270 devices are processed by MFS, unless bypassed by the application program.

Output messages to a 3770, Finance workstation, SLU 1, NTO, SLU P, or ISC subsystem are processed by MFS, if these devices are defined during IMS TM system definition to operate with MFS.

Even when a device is defined to operate with MFS, MFS does not process an output message unless a MOD name was specified by the application program, the MID associated with the previous input message, or the /FORMAT command. Also, message switches from other MFS devices are processed by MFS if the message has an associated MOD.

If you attempt to access a transaction that is to be changed or deleted when the online change utility is run, and you do this after the online change command /MODIFY PREPARE has been issued but before /MODIFY COMMIT has been issued, you receive an error message.