ACL Userid specifies the one- to eight-character user ID that the ACLPGM uses as the &USERID parameter for this session.
ACL Userid can be specified for a session at the user or profile level.
When a passticket user selects a session that has a userid defined in field ACL Userid, the signon is rejected by TPX and not attempted. This error is written to the TPX LOG:
TPXL0926 10/26/16.300 04:51:44.39 ACLUSER FIELD INVALID FOR PASSTICKET : GEN FAILED
FOR USERID: USER001 SESSION: TSO ACLUSER: USERACL
Pass ticket user is successful for sessions with no ACL Userid.
Password user is successful for sessions with or without an ACL Userid defined.