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  4. cac:AdditionalDocumentReference
  5. cac:Attachment
  6. cac:ExternalReference

cac:ExternalReference

Cardinality
0..1
Namespace
cac urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2
Child elements
Card Name Description
1..1 cbc:URI

External document location
The URL (Uniform Resource Locator) that identifies where the external document is located. A means of locating the resource, including its primary access mechanism, e.g. http:// or ftp://.

Example value: http://www.example.com/index.html

Rules
Identifier/Error message Flag
EHF-PR-B02801
Element 'cbc:URI' MUST be provided.		 fatal
EHF-PR-B02802
Document MUST NOT contain elements not part of the data model.		 fatal