M01 – Chargeback Authorization

By September 27, 2019American Express, Reason Code

Chargeback Reason Code

M01

Why did I get a chargeback with American Express reason code M01?

American Express sent an inquiry to learn more about the transaction, and you responded by authorizing American Express to proceed with a chargeback.

What do I need to fight a chargeback with American Express reason code M01?

Your chargeback response must include at least one of the following items:

  • If you have already processed a refund for the transaction in question, provide documentation that proves you have credited the cardholder’s account.

How can I avoid a chargeback with American Express reason code M01 in the future?

  • Maintain complete and accurate records for each transaction you process. Make sure you can access this information quickly and easily.

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