What information is usually required for a traveler to cancel an authorization?

For a traveler to successfully cancel an authorization, the signed authorization document is typically required. This document serves as proof that the traveler initiated the authorization in the first place, and it provides the necessary details that validate the cancellation process. The signed document helps maintain a clear record of both the original authorization and the subsequent request to cancel.

Having the signed authorization document ensures that the cancellation is legitimate and verified. It helps avoid misunderstandings between the traveler and the agency handling the authorization, as it contains critical details like the traveler's name, travel dates, and any associated booking reference numbers. This requirement is essential in maintaining security and accuracy in travel bookings and financial transactions.

Other options, such as the travel agency's name, the reason for cancellation, or the traveler's identification number, may be relevant in some contexts but are not typically mandatory for the cancellation process itself. The signed document stands out as the primary evidence needed to ensure the proper handling of a cancellation request.