SWIFT ISO 15022 - Code GTMO Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Good for the Month: Order that, if not executed, expires at the end of the month on which the order is entered. Usages Message type Field number Tag MT502 (Order to Buy or Sell) 18 22a (Indicator) MT513 (Client Advice Of Execution) 35 22a (Indicator) MT576 (Statement of Open Orders) 43 22a (Indicator)