Sending a subset is easy, but choosing that subset can be more difficult. I doubt the selection criteria would resolve around which bank, but information about

Sending a subset is easy, but choosing that subset can be more difficult. I doubt the selection criteria would resolve around which bank, but information about the account holders and their status. This data will only be available to SWIFT's customer banks. Building an interface to query this data in a standard form from lots of banks would be a nightmare.