Custom Field Validation Exit (IRRVAF01)
The IRRVAF01 exit provides an exit point for the ADDUSER and ALTUSER commands, ADDGROUP and ALTGROUP commands, ADDSD and ALTDSD commands, and RDEFINE and RALTER commands when a field in the CSDATA segment is specified. The exit gets control after each suboperand of the CSDATA keyword has been parsed according to rules for the fields from the CFDEF segment in the corresponding CFIELD profile for the field specified.