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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.
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POS (Point-of-Sale)
A one time debit entry to the account of a receiver where the entry is initiated at an electronic terminal. POS transactions are generally initiated with a merchant issued plastic card.
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UDAP (Unfair or Deceptive Acts or Practices)
Unfair or Deceptive Acts of Practices (UDAP) is a collection of rules for banking regulations, aiming to protect credit card users while adding to card-related disclosures.
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