Reason codes
A reason code details the results of verb processing.
Every reason code is associated with a single return code. A nonzero reason code can be associated with a zero return code.
User Defined Extensions (UDX) return reason codes in the range of 20480 (X'5000') - 24575 (X'5FFF').
The remainder of this topic lists the reason codes that accompany each of the return codes. The return codes are shown in decimal form and the reason codes are shown in decimal and in hexadecimal (hex) form.