Updating of Bank Account at Invoice Installment for unpaid Invoices

Hi Community,

we have a requirement to create an Extension to update Bank account at Invoice Header Installment level. we tried to update Bank account through Rest API .

Since Bank account at supplier site level is masked. we are unable to see whole bank account. it didn't got updated

Even though we provided full Bank account it is not getting updated.

we tried to update through External bank Account ID , here we faced one issue like .when user update bank account how can REST API gets external bank ID to update.

I'm Looking for best practice and how you solved such problem,