What is an MT-999:
MT-999 Pre-advice is a simple SWIFT Text Message sent from buyer's bank to seller's bank. This is used for a bank to bank POF (Proof of Funds) only. The Swift MT999 is not a form of payment & is not a bank undertaking or a promise to pay. It is very similar to an MT799 “free format message” without a particular key code. It is simply a bank to bank confirmation of the funds on deposit.