System ID for the targeting group the element belongs to.
Source
<xs:elementminOccurs="0"name="TargetingGroupID"type="xs:long"xmlns:xs="http://www.w3.org/2001/XMLSchema"><xs:annotation><xs:appinfo/><xs:documentation><summary>System ID for the targeting group the element belongs to.</summary></xs:documentation></xs:annotation></xs:element>