Duplicate Checking for Transactions One of the features Chrome River offers is duplicate checking on credit card transactions to ensure that none are sent twice. The system matches by FeedTransactionUniqueID, Date, Amount, CustomerID, and CustomerUniqueID. Your company can customize these criteria, request duplicate checking only on certain transaction feeds (e.g., just the AMEX feed), or turn off duplicate checking on all transaction feeds by notifying your contact on Chrome River's Implementation team. To get started, create a case via the Chrome River Help Desk. Was this article helpful? Yes No