Allowable values of thematicIdIdentifierScheme element

Code	Label	Definition
eionetSubUnitCode	EIONET river basin district sub-unit identifier scheme	List of identifiers for river basin district sub-units or equivalent spatial unit, reported by EIONET countries that do not report under the "Water Framework Directive - River Basin Management Plans - 2016 Spatial data" reporting obligation.
euSubUnitCode	WFD river basin district sub-unit identifier scheme	List of identifiers for river basin district sub-units reported under the "Water Framework Directive - River Basin Management Plans - 2016 Spatial data" reporting obligation.