A public URL where a document provided in a Call for tender can be downloaded or a URI to the document provided inside the ASIC-E package or any other type of package.

Namespace
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2
Data type
Identifier
Rules
Identifier/Error message Flag
PEPPOL-T004-R035
[PEPPOL-T004-R035] ExternalReference MUST include either URI or FileName
fatal