Source Data Dictionary

Purpose: Represents a location or entity that is the origin of an environmental impact measurement (e.g., a field, a factory, well, or farm).

Field	Data Type	Description	Example	Constraints/Notes
Secure Source ID	String	Unique public identifier for the Source in the METI system	src_83AskOwkQXm6E	Generated by METI, and globally unique
Internal ID	String / UUID	Internal reference ID used to map the Source to user/org databases.	87d9fabc-1234-...	Distinct from SSID, used only for internal linking.
Location (GeoJSON)	GeoJSON Object	Geospatial data describing the physical location/footprint of the Source.	See GeoJSON example.	Must be valid GeoJSON (e.g., point, polygon). Can store coordinates, polygons, etc.
Valid From	Date/DateTime	The date/time from which the Source’s location or definition is valid.	2025-01-01T00:00:00Z	Required
Valid To	Date/DateTime	The date/time until which the Source’s location or definition remains valid.	2030-12-31T23:59:59Z	Required