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ADM policies
Updated on 18 Dec 2020

According to the IATA Resolution 850m (Passenger Agency Conference Resolutions Manual), below you will find TAP's  ADM (Agent Debit Memo) issuance policy applicable since the 01st of June of 2014.

An ADM (Agent Debit Memo) will be issued to correct any wrong calculation difference or wrong report such as:

  • Issuance (ex: plate violation), re-issuance, refund, applicable fare, commission and taxes;       
  • Wrong bookings, duplicate or fictitious;
  • Lack of date of birth of children or Infants on the Name Field, on Endorsement Box or on a PNR SSR;
  • By not following the rules of the Responsible Booking Policies  Manual, not excluding other causes or mistakes.

ADMs will be issued via BSPLink and can only be disputed in English and within a deadline of 15 days after its issuance and according to IATA resolution 850m. ADMs will be issued and addressed to the issuing Travel Agency or the person responsible for the PNR creation.

In cases of wrong booking procedures by Non-IATA Travel Agencies, and due to the fact that the debit cannot be issued via BSP Link, TAP reserves the right to invoice the value of the ADM to the agency and/or to inhibit its access to the inventory.

An administrative fee may be collected for ADM issuance.


The language used for ADMs issuance and dispute is English.

You may also check a Quick Reference we have prepared for guidance.

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