SWIFT ISO 15022 - Code FXID Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Fixed Income: FX trade is for the settlement of a fixed income securities trade. Usages Message type Field number Tag MT380 (Foreign Exchange Order) 20 24B (Reason Code: Transaction Reason Code) MT381 (Foreign Exchange Order Confirmation) 19 24B (Reason Code: Transaction Reason Code)