Abend codes provide a notice that the system abnormally terminated. Some PowerExchange components issue a single abend code for all abends. Other components issue different abend codes with each abend message also providing a reason code that explains the abend. PowerExchange also issues abend codes that are created by the MVS operating system or another IBM product. For explanations of these abend codes, see the appropriate IBM MVS, IMS, VSAM, or DB2 documentation.