Online payment systems for retailers: an overview of the advantages and disadvantages
A zero-value auth, as the name suggests, is an authorisation request with a value of 0 (EUR/USD/etc.). It is used to either store details or obtain shopper details to access the customer’s purchase history or other details from the merchant database. The currency needs to match the transaction currency. Zero-value auth is used for example when submitting a BIN or a card verification request.
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