Return Codes from the CHSTRACE Macro

When a program resumes control after issuing the CHSTRACE macro, the program must inspect register 15, or the variable defined in the RETCODE parameter, for a return code from MVSSERV. The possible return codes are shown in Table 1.

Table 1. Return Codes from the CHSTRACE Macro
Return Code Dec(Hex)	Meaning
0(0)	The message was successfully issued (to the terminal, the trace data set, or both).
4(4)	A failure occurred in message processing. Check the syntax of the CHSTRACE macro and the allocation of the trace data set.