A communication channel is provided between a transaction acquirer and a payment network, for the purpose of transmitting payment card account transaction authorization requests. Via the communication channel the payment network may receive a message containing additional information. The additional information may originate at the point of sale and may be in addition to a PAN (primary account number) or the like. The payment network may send a message including the additional information to an entity that is neither a payment account issuer nor the transaction acquirer.