AcceptorNummer

AcceptorNummer is a unique identifier used within payment processing systems to identify the merchant or business that accepts electronic payments. The term is commonly encountered in card payment networks and related ecosystems, where the acceptor number helps distinguish the merchant-processor relationship and supports proper routing of transactions for authorization and settlement. While the exact label and format can vary, the concept is analogous to other merchant identifiers used in payment infrastructure.

In practice, the AcceptorNummer is issued by the acquiring bank or payment service provider and is associated with the merchant’s account. It often appears together with other identifiers such as a Merchant ID, Terminal ID, or Acquirer ID in transaction data. During a payment, the acceptor number assists networks and issuers in verifying the merchant, routing funds correctly, and enabling accurate reporting and reconciliation.

The format and naming of AcceptorNummer differ across networks and regions. Some systems use numeric codes, others alphanumeric, with lengths that depend on the issuing organization. The identifier typically remains constant for the merchant while the merchant accounts or processors are active, though it may be reassigned if a merchant switches processors or undergoes major account restructuring.

See also: Merchant ID, Acquirer, Payment gateway, Terminal ID, Payment processor.