Hi Eddie,
The authorization check fails on:
NOT SITE IN ('BHX','GMO','LOG','PBM','PKM','SHS','VTE')
I advise to include an authorization variable which is "input ready" in the Characteristic Restrictions (i.e. global filter). The authorized values are then displayed as default values). The selection can never exceed the authorized values and avoids the authorization error.
Best regards,
Sander