SWIFT ISO 15022 - Code GTCA Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Good until Cancelled: Order that remains in effect until it is either executed or cancelled. 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)