The API types MUST adhere to the formats defined below:
| Data type | Standard | Example |
|---|---|---|
| Date and Time | ISO 8601 | 2017-06-21T14:07:17Z (Always use UTC) |
| Date | ISO 8601 | 2017-06-21 |
| Duration | ISO 8601 | P3Y6M4DT12H30M5S |
| Time interval | ISO 8601 | 2007-03-01T13:00:00Z/2008-05-11T15:30:00Z |
| Timestamps | ISO 8601 | 2017-01-01T12:00:00Z |
| Language Codes | ISO 639 | en <-> English |
| Country Code | ISO 3166-1 alpha-2 | DE <-> Germany |
| Currency | ISO 4217 | EUR <-> Euro |