How to enable Audit for Bank accounts created at site level ?

Organization Name (Required - If you are an Oracle Partner, please provide the organization you are logging the idea on behalf of):

Pilbara Ports Authority, Perth

Description (Required):

When we enable the audit for supplier, for Bank account changes, the current attributes only show the changes at the Supplier-Master level. There is no attribute Under "Supplier Bank Account" (In the Manage Audit Policy) for the Product: Supplier Model.

Use Case and Business Need (Required):

We have a scenario, where for a supplier at the Supplier-master level, there is no bank account. But for each site, we have 1-1 bank mappings. There have been some changes at the supplier site level bank account details. When the Audit report is viewed, it only tells about the change of bank accounts but does not specify any supplier site info. Hence its not very clear.