A DRC (detailed reason code) 81 is a PRIVPGM violation.
User is only allowed access to the resource on when access through the specified PRIVPGM keyword on the PERMIT.
Access to the resource outside of the program will cause a security violation with a DRC 81.
PERMIT the resource to the user to access the resource through the program via the PRIVPGM keyword. Run a TSSUTIL violation report to determine the program being used to access the resource.