Message

EndTime cannot be specified without StartTime

Context
cac:EstimatedDeliveryPeriod
Test
not(cbc:EndTime) or (cbc:EndTime) and (cbc:StartTime)
Usage
/ ubl:DespatchAdvice / cac:Shipment / cac:Delivery / cac:EstimatedDeliveryPeriod / cbc:StartTime
/ ubl:DespatchAdvice / cac:Shipment / cac:Delivery / cac:EstimatedDeliveryPeriod / cbc:EndTime