xpdl:Message 

BPMN: Implementation-related but required by spec

Element Information

Model

(xpdl:ActualParameters | xpdl:DataMappings) , ANY element from ANY namespace OTHER than 'http://www.wfmc.org/2009/XPDL2.2'
Children: xpdl:ActualParameters, xpdl:DataMappings

Attributes

QName Type Fixed Default Use Inheritable Annotation
FaultName xsd:NMTOKEN optional
From xsd:NMTOKEN optional 
This must be the name of a Participant
Id xsd:NMTOKEN required
Name xsd:string optional
To xsd:NMTOKEN optional 
This must be the name of a participant
Wildcard: ANY attribute from ANY namespace OTHER than 'http://www.wfmc.org/2009/XPDL2.2'

Source 

<xsd:element name="Message" type="xpdl:MessageType" minOccurs="0">
  <xsd:annotation>
    <xsd:documentation>BPMN: Implementation-related but required by spec</xsd:documentation>
  </xsd:annotation>
</xsd:element>

Sample