ISO/TS 10303-1777:2008 specifies the application module for
External currency.

The following are within the scope of
ISO/TS 10303-1777:2008:

• definition of a currency that is not included in the data exchange file and is defined in an external dictionary;
• items within the scope of application module Currency, ISO/TS 10303-1775;
• items within the scope of application module External unit, ISO/TS 10303-1780.