Merchant Fraud Guide Sections

AVS and CVV Mismatches Explained

CVV Check Failed: What It Means

A failed CVV check is a warning sign, not a verdict. Here is how to read it and what to do next.

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AVS Mismatch on a Legitimate Order

A real customer can fail the address check. Here are the innocent causes, how to read the code, and how to decide without turning away good buyers.

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AVS Response Codes: What Each Result Means

A plain guide to the main AVS response codes, what each one tells you, and how to act on the result without punishing good customers.

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AVS Mismatch: What It Means and What to Do

An AVS mismatch is a warning, not proof of fraud. Here is what the check compared, why good orders fail it, and what to do next.

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Failed AVS Check: Ship the Order or Not?

A billing address that does not match is a warning, not a verdict. Here is how to read it before you pack the box.

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