SWIFT ISO 15022 - Code MATU Meanings Maturity: Transaction was effected at yield to maturity. This is an instruction to settle a liquidation of a fixed loan/deposit. Usages Message type Field number Tag MT321 (Instruction to Settle a Third Party Loan/Deposit) 4 22H (Indicator) MT515 (Client Confirmation of Purchase or Sale) 26 22a (Indicator)