Setting Up System Users
If a system user cannot enter GUI transactions or cannot access the correct forms, verify that:
The Localization Country Code field in the User Profile Revisions program (P0092) is TW (Taiwan).
The user is set up as an authorized user for the declaration site and transaction type in the GUI/VAT User/Declaration Site Mapping program (P75T010).
The authorization code for the user, declaration site, and segment numbers must be the same.