Message

A Date MUST have at least one slot.

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) > 0
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