System and method for stand-in processing

A system for stand-in processing, comprising:

• a processor in communication with a plurality of acquirer computing devices and an issuer computing device via a payment card network, the issuer computing device associated with an issuer of a payment card;
• and
• a memory unit communicatively coupled to the processor,
• wherein the memory unit is configured to store transaction data received from the acquirer computing devices via the payment card network, the transaction data corresponding to a plurality of transactions made by the payment card, the transaction data for each of the transactions including a data element corresponding to a point of sale (POS) entry mode;
• and
• wherein the processor is configured to:
• determine that a value of the data element indicates the POS entry mode for at least one of the transactions as ATM-based;
• in response to the indication that the POS entry mode for the at least one transaction is ATM-based, apply at least one stand-in rule provided by the issuer of the payment card to process the at least one transaction on behalf of the issuer, wherein processing comprises one of approving and declining the at least one transaction in a response to the corresponding acquirer computing device, the one of approving and declining determined without communicating the transaction data over the payment card network to the issuer computing device;
• and
• in response to the POS entry mode for a second portion of the transactions being other than ATM-based, for each transaction of the second portion of transactions:
• communicate, via the payment card network, the transaction data to the issuer computing device;
• receive, via the payment card network from the issuer computing device, an authorization response message that one of approves or declines the corresponding transaction;
• and
• forward the authorization response message to the corresponding acquirer computing device via the payment card network.