ISMF return codes

When one ISMF function calls another, the return code from the called function is placed in register 15. Table 1 lists the standard return codes that are used by ISMF. Some of the individual interfaces may define return codes differently.

Table 1. ISMF—Standard Return Codes
Return Code	Description
0 (X'00')	Successful.
4 (X'04')	Function performed with minor error.
8 (X'08')	Function not performed; no termination.
12 (X'0C')	Function not performed; terminating error.
16 (X'10')	Function not performed; terminating error.
20 (X'14')	Function not performed; terminating error.