What is the XML rule for Required Attributes?

<rule>    <description>Required Attributes</description>    <conditions>        <or>            <if-class-name op="equal">User</if-class-name>          </or>      </conditions>    <actions>        <do-veto-if-op-attr-not-available name="urn:ietf:params:scim:schemas:core:2.0:User:name.givenName"/>        <do-veto-if-op-attr-not-available name="urn:ietf:params:scim:schemas:core:2.0:User:name.familyName"/>        <do-veto-if-op-attr-not-available name="urn:ietf:params:scim:schemas:core:2.0:User:emails.value"/>      </actions>  </rule>