SWIFT ISO 15022 - Code LAAW Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Awaiting Other Transaction: Awaiting settlement of a purchase to cover failing positions. 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)