SWIFT ISO 15022 - Code DEALTRAN Meaning Deal Transaction Details Usages Message type Field number Tag MT527 (Triparty Collateral Instruction) 20 16R (Start of Block) MT527 (Triparty Collateral Instruction) 28 16S (End of Block) MT558 (Triparty Collateral Status and Processing Advice) 27 16R (Start of Block) MT558 (Triparty Collateral Status and Processing Advice) 33 16S (End of Block)
