Reason code
MasterCard
6322 Request Transaction Certificate for a Chip Transaction
MasterCard

Authorization

6322 Request Transaction Certificate for a Chip Transaction

Details

This code is used when an issuer requests the Transaction Certificate (TC) for a chip-enabled (EMV) transaction. The TC is a cryptographic value generated during a chip transaction, confirming its authenticity. Issuers may request this to verify transaction integrity or investigate potential issues.

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Timing to raise the dispute (Issuer/Cardholder)

120days

Timing to respond to the dispute (Acquirer/Merchant)

30days

How to respond?

To address a retrieval request under Reason Code 6322:​

  • Provide Transaction Documentation: Submit a clear, legible copy of the original sales receipt or transaction record, including details like the transaction date, amount, and description of goods or services provided.​

  • Include the Transaction Certificate: Retrieve the certificate from your point-of-sale system or payment processor records and include it with the documentation.​

  • Additional Relevant Information: If available, provide any logs or data from the chip transaction that can assist in verifying its authenticity.

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How to prevent?

To minimize the occurrence of such retrieval requests under reason code 6322:

  • Maintain Detailed Records: Ensure your POS system properly records all chip transaction data, including the Transaction Certificate, and that this information is retrievable when needed.​

  • Regular System Checks: Periodically verify that your POS terminals are correctly processing and storing chip transaction data.​

  • Staff Training: Train staff on the importance of chip transaction data and the procedures for retrieving it in case of inquiries.

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