Bank key for International banks

4 hours ago

I understand we can use SWIFT or Routing numbers for bank keys. If I am opting to use Routing Number, what would the Bank Key configuration look like for non-North American banks that do not have a routing number?

My analysis so far has been as follows:

https://en.wikipedia.org/wiki/Bank_code

All banks should have a bank code (bank key in SAP ?)

Let’s take an example: westpac new zealand limited (SWIFT code is: WPACNZ2W)
As per New Zealand, bank account numbers in NZD follow a standardised format of 16 digits:

• a prefix representing the bank and branch (six digits), otherwise known as the Bank code;
• the body (seven digits); and
• the suffix representing the product/account type (two or three digits).

reference: https://en.wikipedia.org/wiki/New_Zealand_bank_account_number

So this means that there should be a six digit bank code for this bank and branch (similar to routing in NA).

For Westpac New Zealand: six digits start with 03 (Westpac) followed by four digits for branch

https://www.westpac.co.nz/help/how-is-a-westpac-account-number-structured/

Let's take another example For ASB bank: first six digits of complete account number is the bank code. ASB should start with 12 or 24.

https://www.asb.co.nz/foreign-exchange/managing-your-account-overseas-guide.html#:~:text=BSB%20or%20...

https://www.newzealandbankcodes.com/

Am I in the right direction and should I ask the client to get this information from the business partner or should I be using some other identifier as Bank Key?

Thank you