Almost all companies in Australia are using BPAY has a method of payment. An extension is always required to create the CRN reference for the customer and to setup the BPAY biller code under the legal entity. The biller code is just an extra field under the legal entity. The Customer reference required the value to be calculated from the customer number by using an algorithm (Mod10). The tricky part is the format of the customer number (if it is alphanumeric) so we may need to build some logic around it to be able to suit most of the companies.