<xsd:documentation>Unique identifier for the wellbore.
This value is only required to be unique within the context of the containing well.
The uid attributes of all dependent objects (e.g., trajectory) are only
required to be unique within the context the containing wellbore. </xsd:documentation>
<xsd:appinfo>Modified-in-version=1.4.0, By-issue=1.3.1-5, Change=Changed-type-from:attgrp_uid</xsd:appinfo>
<xsd:appinfo>Modified-in-version=1.4.0, By-issue=1.3.1-83, Change=Modified-description</xsd:appinfo>
</xsd:annotation>