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VAMP enumeration ratio
CalculatorVAMP enumeration ratioBack to article
Type Visa-identified enumerated auths and all auth attempts for the same month. We do not fill a sample attack. Declines count. Settled sales are the wrong denominator.
Enumeration ratio
Type enumerated and all auth attempts. Public Visa line is 20% with at least 300,000 enumerated — both.
Type the Visa-flagged enumerated auth count and all auth attempts for the same month. We do not fill a sample attack. Do not use settled sales.
Pairing procedure: What counts as VAMP enumeration. Topic: Chargebacks.
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