<xs:attributeGroup name="DateTimeStampGroup">
    <xs:annotation>
        <xs:documentation xml:lang="en">Creation date time, Creator Id, last modification date time and last Modifier Id.</xs:documentation>
    </xs:annotation>
    <xs:attribute name="CreateDateTime" type="xs:dateTime" use="optional">
        <xs:annotation>
            <xs:documentation xml:lang="en">Time stamp of the creation.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="CreatorID" type="StringLength1to32" use="optional">
        <xs:annotation>
            <xs:documentation xml:lang="en">ID of creator. The creator could be a software system identifier or an identifier of an employee resposible for the creation.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="LastModifyDateTime" type="xs:dateTime" use="optional">
        <xs:annotation>
            <xs:documentation xml:lang="en">Time stamp of last modification.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="LastModifierID" type="StringLength1to32" use="optional">
        <xs:annotation>
            <xs:documentation xml:lang="en">Identifies the last software system or person to modify a record.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="PurgeDate" type="xs:date" use="optional">
        <xs:annotation>
            <xs:documentation xml:lang="en">Date an item will be purged from a database (e.g., from a live database to an archive).</xs:documentation>
        </xs:annotation>
    </xs:attribute>
</xs:attributeGroup>