<xsd:documentation>The unique identifier of a container element. This attribute is generally required within the context of a WITSML server. There should be no
assumption as to the semantic content of this attribute. This should only be used with recurring container types (i.e., maxOccurs greater than one). The value is only
required to be unique within the context of the nearest recurring parent element.</xsd:documentation>
</xsd:annotation>
</xsd:attribute>
</xsd:attributeGroup>
3) uid mandatory was dropped in the end.
4) Made installation mandatory in production operation report