Concept: Check if the operational period for the station is correct in the cdrqaqc vocabulary

Concept URI	http://dd.eionet.europa.eu/vocabulary/aq/cdrqaqc/D23
Preferred label	Check if the operational period for the station is correct
Definition	List the total number aqd:AQD_Station invalid operational activity periods ./ef:operationActivityPeriod/ef:OperationActivityPeriod/ef:activityTime/gml:TimePeriod/gml:beginPosition shall be less than gml:endPosition.
Notation	D23
Status	Valid
Status Modified	2017-08-04
Accepted Date	2017-08-04
Not Accepted Date
Hidden label	Station has incorrect operation period [en]
Editorial note	[Crucial]: Yes - IPR requirement (Annex II-D-ii-7)
Error type	BLOCKER