Allowable value of predecessorsIdentifierScheme element

Code	eionetGroundWaterBodyCode
Label	EIONET groundwater body identifier scheme
Definition	Identifier scheme for groundwater bodies or equivalent spatial units, reported by EIONET countries that do not report under the "Water Framework Directive - River Basin Management Plans - 2016 Spatial data" reporting obligation. Also includes other groundwaters or aquifers that are not WFD water bodies, but are used for reporting purposes under WISE SoE.