Popular Articles

  1. MasterCard's Decline Code Grouping and MAC

    Last Updated: 06/24/2022 in Disputes, Fraud, and Security
    Information about MasterCard's decline code grouping program (MAC).

  2. Visa’s Decline Code Grouping

    Last Updated: 06/24/2022 in Disputes, Fraud, and Security
    Information about Visa's rules for decline code reasons and appropriate retry strategies.

  3. ACH Payment and Validation Response Codes

    Last Updated: 07/06/2022 in Products ACH Payments
    Lists of possible response codes for ACH verification transactions.

  4. ACH Payment Reject Reason Codes and Descriptions

    Last Updated: 07/06/2022 in Products ACH Payments
    Information on reject reason codes for ACH payments.

  5. Configure Account Updater

    Last Updated: 07/18/2024 in Products Account Updater
    How to configure Account Updater.

  6. Surcharges and How They Work

    Last Updated: 01/30/2024 in Transactions
    Information on surcharges and how they work.

  7. Merchant Account Reserve Overview

    Last Updated: 06/28/2022 in Reporting and Reconciliation
    Overview of merchant account reserves.

  8. Convenience Fees and How They Work

    Last Updated: 07/22/2024 in Transactions
    Information on convenience fees and how they work.

  9. Contacting Maast

    Last Updated: 07/07/2022 in Working With Maast
    Customer Support contact information for Maast.

  10. Account Updater Overview

    Last Updated: 07/06/2022 in Products Account Updater
    An overview of the Account Updater product.

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