Reason codes provide information about system operations or about the cause of problems. This section provides lists and explanations of reason codes that can help you or your vendor product support representative troubleshoot the failing component. The PowerExchange reason codes are listed by PowerExchange component. Some reason codes provided by PowerExchange are created by the z/OS operating system or another IBM product.

For explanations of these reason codes, see the appropriate IBM z/OS, IMS, VSAM, or DB2 documentation. Some components do not create reason codes, but display reason codes created by another component or the operating system.

For example, the copybook compiler does not create reason codes. Each reason code it displays is created by a system routine and is documented in the IBM z/OS manual cited in the message that returns the reason code.

Reason codes are written to the appropriate message log or displayed as hexadecimal or decimal values. The hexadecimal format is X'

xxxxxxxx

' and the decimal format is (

nnnnnnnn

). The reason code is four bytes long. The first two bytes (four hexadecimal characters) identifying the internal module; the last two bytes (four hexadecimal characters) identifying the reason.