Return codes

Table 1 shows the return codes for the user ID routine. The routine returns the return code in register 15. If you specify the return code parameter (parameter 5), the user ID routine also returns the return code in the parameter.

Table 1. Return codes for the user ID replaceable routine
Return code	Description
0	Processing was successful. The user ID was returned or a null character string was returned.
20	Processing was not successful. Either parameter 1 (function) was not valid or parameter 3 (length) was less than or equal to 0. The user ID was not obtained.
28	Processing was not successful. The language processor environment could not be located.
32	Processing was not successful. The parameter list is not valid. The parameter list contains either too few or too many parameters, or the high-order bit of the last address in the parameter list is not set to 1 to indicate the end of the parameter list.