Message

Element 'cbc:URI' MUST be provided.

Context
/ubl:Catalogue/cac:CatalogueLine/cac:Item/cac:ItemSpecificationDocumentReference/cac:Attachment/cac:ExternalReference
Test
cbc:URI
Usage
/ ubl:Catalogue / cac:CatalogueLine / cac:Item / cac:ItemSpecificationDocumentReference / cac:Attachment / cac:ExternalReference