Reason Code A01: Charge Amount Exceeds Authorization

The amount the merchant sought approval for was less than the transaction amount.

• The merchant made an error when manually entering the transaction amounts.
• The transaction amount processed was over the merchant's limit.

• Avoid processing a transaction after receiving a declined authorization.  
• If you add tips and gratuities, ensure they aren’t over the allowed upper limit. 
• Never change the transaction amount after receiving authorization approval. If there’s a price change, submit a new approval request.