Enable list of Values for Bank and Bank Branches

Summary:

Content (required):

Dear Colleagues,

At the moment customer has bank field as freetext in payment methods transaction.

Could someone tell me how to do the setup that makes the Bank and Bank Branches field based on value list? In addition, could someone tell me how to handle the mandatory fields?

Bank and bank branches have already been loaded

Version (include the version you are using, if applicable):

21C

Code Snippet (add any code snippets that support your topic, if applicable):