A MADA transaction may fail with a 20030 - Format error response code for any of the following reasons:
- the 3DS and CVV information required for MADA transactions was missing.
- a MADA transaction refund was attempted after the 30-day expiry period. If you need to refund a MADA transaction after 30 days, you can either:
- initiate a direct bank transfer to the customer, if the refund is urgent. As the transaction will have already been captured by your acquiring bank, you should have already received the funds.
- Alternatively, contact your acquirer bank directly to request a manual refund.
The 20030 - Format error response code is a generic decline code for Third-Party Acquirer (TPA) processors and can also affect other products. For more information about the response code, see the API response codes documentation.
If you have further questions or issues, contact our Support team.