SWIFT ISO 15022 - Code PENF Meaning Pending/Failing Settlement: Instruction is failing. Settlement at the instructed settlement date is no longer possible. Usages Message type Field number Tag MT537 (Statement of Pending Transactions) 17 25D (Status) MT537 (Statement of Pending Transactions) 63 25D (Status) MT548 (Settlement Status and Processing Advice) 10 25D (Status) MT549 (Request for Statement/Status Advice) 16 25D (Status)