# XML Schema Documentation

### Complex Type: ConversationId

#### [Table of contents]

Super-types: | Scheme < ConversationId (by extension)
Sub-types: | None

Name | ConversationId
Used by (from the same schema document) | Complex Type MessageHeader
Abstract | no
Documentation | The unique identifier (name) for the conversation (session), this message is within. A conversation identifier is usually assigned by the initiator of a conversation. Conversations may only be initiated and terminated. Joining conversations has the effect of initiating new conversations. Conversations cannot be split; this instead has the effect of parallel activities on the same conversation or the initiation of a new conversation. Each message belongs to only one conversation. Conversation scopes are defined in the business process definition.

XML Instance Representation
<...
conversationIdScheme=" xsd:anyURI [1]">
Scheme
</...>
Diagram
Schema Component Representation
<xsd:complexType name="ConversationId">
<xsd:simpleContent>
<xsd:extension base=" Scheme ">
<xsd:attribute name="conversationIdScheme" type=" xsd:anyURI " use="required"/>
</xsd:extension>
</xsd:simpleContent>
</xsd:complexType>