Message

PartyIdentification SHOULD be used exactly once.

Context
ubl:TendererQualificationResponse/cac:SenderParty | ubl:TendererQualificationResponse/cac:ReceiverParty
Test
count(./cac:PartyIdentification) = 1
Usage
/ t023:TendererQualificationResponse / cac:SenderParty
/ t023:TendererQualificationResponse / cac:SenderParty / cac:PartyName
/ t023:TendererQualificationResponse / cac:ReceiverParty
/ t023:TendererQualificationResponse / cac:ReceiverParty / cac:PartyName