Created: 13 Sep 2005
Status: Not Applicable
Part: Part 6 (2004)
Category: Issue for edition 2 of this part
<xs:unique> requires that any attributes referenced in the field are non-null. Validators give inconsistant results and typically fail to flag unicity errors when these attributes are missing. SCL contains a few <xs:unique> definitions that contain fields that reference optional attributes. They are UniqueLNodeType, UniqueLNInAccessPoint, UniqueLNInDevice and UniqueLNode.
Any attribute referenced in a <xs:unique> field should be required. This would affect tLNode, tLN and tLNodeType.
Tissue DB v. 188.8.131.52