EFT/ACH file error - Urgent

Hello SAP gurus,

I have set up the EFT payment for vendors, I have been told by bank that our EFT file was not correct due to the following:

- Incorrect tax id number

- Unable to identify which account to pay from

any idea why it is pulling incorrect tax id and not able identify the correct account to pay.

Its urgent and will assign points as a thank you.

Thanks

Bushan