ACK (ACH Payment Acknowledgement)
An ACK entry is an acknowledgement by the receiving depository financial institution (RDFI) confirming the receipt of a corporate credit or debit (CCD) credit entry.Learn More
A payment gateway is an application service provider that authorizes credit card and electronic check payments for businesses. A payment gateway facilitates the transfer of information between a payment portal (such as a website, mobile phone, or interactive voice response service) and the front-end processor or acquiring bank. When a customer orders a product from a payment gateway-enabled merchant, the payment gateway performs a variety of tasks to process the transaction.
RCK (Re-presented Check)
An additional presentment of an eligible returned paper check through the ACH network.Learn More