Payment Method - IBAN and bank validation

Summary:

System accepts invalid data combinations from different banks

Content (required):

Employee bank details entry in Me->Pay->Payment Method: Country, IBAN, Account Holder, Bank, Bank Branch are mandatory fields and need to be populated by user (not derived from IBAN). System accepts mismatching values, e.g. IBAN (Bank A) and Bank (Bank B) as there is no validation to ensure the 2 values belong to same bank. Is it possible to implement validation rules to ensure data accuracy and avoid user errors?

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

23B

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