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Authorization Process  of Customer decides to make an online purchase and inputs credit card information. Merchant ’s website receives customer information and sends it to a payment processing service, Payment processing service routes information to processor,Processor routes information to bank that issued customer’s credit card (issuing bank) .
Issuing bank sends authorization (or declination) to processor,Processor routes transaction results to payment processing service.Payment processing service sends results to merchant
1The E-Tail Process - Siri 129m
2The E-Tail Process - Siri 221m