Accounts Receivables - AR Lockbox file - adding new payment methods

Hi,

    Iam working on adding new payment methods to Regular deposit Page Payment methods. Current peoplsofy FSCM 9.1 with PT 8.52 is having a delivered  3 Payment metods - "Cash","EFT","Giro EFT". Now my requirement is to add;

ACH Payments,credit card payments(VISA, AMEX, DISCOVERY, MASTER),WIRE from Lock box file.

Since i do not want to touch the delivered field(Payment method) in payments page(Main Menu>Accounts Receivable>Payments>Online Payments>Regular Deposit) since it might have many definition references and i would like to add another field to the page and include these options,however the deposit ID(KEY FIELD) is causing issues as it gets generated after the SQR(AR25001).Because when we do a transaction online the Deposit id gets generated and its one of the keys and it’s not the case when we load through Lockbox(deposit id does not get created).The Lockbox process accepts deposits with these payment methods: CHK (check), EFT (electronic file transfer), and GE (giro - EFT). If an invalid value is found in the lockbox file,