# XML Schema Documentation

### Model Group: PositionIdAndVersion.model

#### [Table of contents]

Name | PositionIdAndVersion.model
Documentation | A model group that includes a position ID and an optional version.

XML Instance Representation
<positionId> PositionId </positionId> [1]

'A version-independent identifier for the position, possibly based on trade identifier.'

<version> xsd:positiveInteger </version> [0..1]

'A version identifier. Version identifiers must be ascending, i.e. higher numbers imply newer versions. There is no requirement that version identifiers for a position be sequential or small, so for example timestamp-based version identifiers could be used.'

Diagram
Schema Component Representation
<xsd:group name="PositionIdAndVersion.model">
<xsd:sequence>
<xsd:element name="positionId" type=" PositionId "/>
<xsd:element name="version" type=" xsd:positiveInteger " minOccurs="0"/>
</xsd:sequence>
</xsd:group>