SWIFT ISO 15022 - Code DMCT Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Disagreement Automatic Generation: Disagreement on automatic generation of market claim or transformation. Usages Message type Field number Tag MT537 (Statement of Pending Transactions) 19 24B (Reason) MT537 (Statement of Pending Transactions) 65 24B (Reason) MT548 (Settlement Status and Processing Advice) 12 24B (Reason) MT549 (Request for Statement/Status Advice) 17 24B (Reason)