SWIFT FIN is a message type (MT) that transmits financial information from one financial institution to another.
Each SWIFT message is represented by a three-digit number. The first number identifies the category to which the message belongs. The second and third numbers identify the message type.
Each SWIFT message uses a format that has five possible blocks:
Basic header block - contains basic header information.
Application header block - contains header information about the message itself.
User header block - identifies the version of the message standard.
Text block - contains the text of the SWIFT message.
Trailers block - contains special handling conditions, instructions or additional information.