For the BPAY system to process payments every business has a unique Biller Code to identify it. You also need to be able to identify each of your customers or invoices so that you can correctly reconcile the payments received.
This is done by allocating a BPAY Customer Reference Number.
The BPAY CRN Creation Tool allows you to create BPAY CRNs either using an existing number, for example an invoice or account number, or by creating completely new numbers. The BPAY CRN generated includes a final digit known as a check digit that is required to ensure the number entered by a customer into the system is correct.
All check digits are created using the check digit routine $checkDigitRule.