Check/Reference
If the transaction is a payment, the check number displays; otherwise, the reference numbers used for debits and credits displays. The reference number is the sequence number, enabling you to track a unique identifier for a customer for a specific invoice, finance charge, or open credit.
You can update this field in the main body of this form. This number also displays in the Chk/Ref column in the grid at the bottom of the A/R Quick Payment Application form.
For example, if you have an invoice against a customer, a debit transaction is made against this invoice for this customer with a Check/Reference of 1. If a credit is made against this same invoice, the Check/Reference is incremented to 2 for the credit transaction.