The system uses the check number to retrieve the original customer payment and change its status to Paid. When the check number is not available in the bank file (for example, the bank has not included this value in the file), the system then identifies payments that have a status of For Collection and are of the same amount as the check that has been paid. Once these conditions are met, the For Collection payment is automatically updated to Paid. For an example of this type of payment, see Customer Payments.