How to assign vendor bank accounts defined at site level, to address level - in bulk

Hi,

All our bank accounts were created on Site. We now need all these accounts on Address as well.

We know how to manually assign a single bank account (created on Site level) to Address level:

Payables > Suppliers > Banking Details > For "Select Account Assignment Level", select Address and Address value > Select Go > No accounts are listed > Select the Add button > Select account that is defined on Site level and Save

Please advise how we can perform the above action as a once off, in bulk? Is there an API available?

Thank you,