What is MT 103 and MT199?

MT 103 and MT 199 are messages used in the SWIFT network for international financial transactions. MT 103 is a standard message type for single customer credit transfers, providing details about the transaction such as the sender, receiver, and amount. In contrast, MT 199 is a free-format message used for various purposes, including communication between banks regarding transactions, inquiries, or clarifications that do not fit into other specific message types. Both messages facilitate secure communication and processing of financial transactions between institutions.