It concerns the format used for a standard amount (for example invoice amount inclusive of tax). The format is variable with a limit of 20 significant characters. The format includes possible space deliminators. Examples: Maximum format limited to 13.2 significant figures : 13 numbers, 2 decimals and 5 deliminator spaces (#,###,###,###,###.##). Maximum format limited to 15 significant figures : 15 numbers, 0 decimals and 4 deliminator spaces (###,###,###,###,###). Maximum format limited to 12.3 significant figures : 12 numbers, 3 decimals and 4 deliminator spaces (###,###,###,###.###).