Sort the card payment roles
Categorize card-payment actors by buyer side, merchant side, network, and platform/processor roles.
Sort each payment actor or artifact into the bucket that best describes its primary role in a card transaction. Buyer side Merchant side Network and rules Platform and processing Cardholder issuing bank that approves or declines the buyer authorization Buyer wallet token used before card credentials reach the network path Merchant acquirer that sponsors acceptance and settlement access Merchant of record responsible for the customer sale and refund policy Card network rules and message rails connecting issuer and acquirer Interchange category or dispute rule applied under scheme rules Payment processor or gateway that routes authorization and capture messages Marketplace ledger…
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