mandatoryId

Attribute Group Information

Attributes

QName Type Fixed Default Use Inheritable Annotation
id idType required 
<h:div class="summary">An attribute providing a mandatory unique ID for an element.</h:div>
<h:div class="description">This is a horrible hack. It should be possible to add 'required' to the attributeGroup where used... (Maybe it is and I am still fighting Schema Wars.</h:div>

Source 

<xsd:attributeGroup id="attGp.mandatoryId" name="mandatoryId">
  <!-- Note: name differs from attributeGroup name -->
  <xsd:attribute id="att.mandatoryId" name="id" type="idType" use="required">
    <xsd:annotation>
      <xsd:documentation>
        <h:div class="summary">An attribute providing a mandatory unique ID for an element.</h:div>
        <h:div class="description">This is a horrible hack. It should be possible to add 'required' to the attributeGroup where used... (Maybe it is and I am still fighting Schema Wars.</h:div>
      </xsd:documentation>
    </xsd:annotation>
  </xsd:attribute>
</xsd:attributeGroup>