mmm internal error was detected while processing messages. processing name1=aa...aa, reason code=bb...bb, processing name2=cc...cc

mmm: MCF identifier

aa...aa: Maintenance information (issued function name)

bb...bb: Maintenance information (return code of the issued function)

cc...cc: Maintenance information (function name of the issue source)

S: Continues processing.

O: Contact the maintenance personnel.