# XML Schema Documentation

### Complex Type: MessageId

#### [Table of contents]

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

Name | MessageId
Used by (from the same schema document) | Complex Type MessageHeader , Complex Type NotificationMessageHeader , Complex Type ResponseMessageHeader
Abstract | no
Documentation | The data type use for message identifiers.

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