> Code 30 - Format error The payment was declined by the buyer's bank due to reason 30 - Format error This decline message indicates a technical error. What can you do? Contact our technical support to resolve the problem. Updated 22 April 2026 14:21 Related articles > Code 51 - Insufficient balance or exceeded credit limit Proof of a payment or refund rejected > Code 13 - Montant Invalide > Code 206 - 3D Secure - A technical error occurred during the process. > Code 60 - The acceptor of the card must contact the acquirer