Message

The rim:Slot name "EndDate" can only be used once.

Context
query:QueryRequest/query:Query/rim:Slot[@name='PublicationDate'] | query:QueryRequest/query:Query/rim:Slot[@name='DeadlineReceiptTenders'] | query:QueryRequest/query:Query/rim:Slot[@name='AdditionalInformationDeadline'] | query:QueryRequest/query:Query/rim:Slot[@name='DeadlineReceiptRequests']
Test
count(rim:Slot[@name='EndDate']) < 2
Usage
/ query:QueryRequest / query:Query / rim:Slot@name=PublicationDate
/ query:QueryRequest / query:Query / rim:Slot@name=DeadlineReceiptTenders
/ query:QueryRequest / query:Query / rim:Slot@name=AdditionalInformationDeadline
/ query:QueryRequest / query:Query / rim:Slot@name=DeadlineReceiptRequests