B2BCatalogCombinationNodes

combinationNode
type	B2BCatalogCombinationNode
occurs	1..∞
description	first step after combinationNodeId in combinationTrees

id (attribute of combinationNode)
type	xs:unsignedInt
use	required
description	id comes from combinationNodeId in combinationTrees

internalDescription (attribute of combinationNode)
type	xs:string
use	optional
description	for internal use only, will not be displayed

<xs:complexType name="B2BCatalogCombinationNodes">
  <xs:sequence>
    <xs:element maxOccurs="unbounded" name="combinationNode">
      <xs:complexType>
        <xs:complexContent>
          <xs:extension base="B2BCatalogCombinationNode">
            <xs:attribute name="id" type="xs:unsignedInt" use="required"/>
            <xs:attribute name="internalDescription" type="xs:string"/>
          </xs:extension>
        </xs:complexContent>
      </xs:complexType>
    </xs:element>
  </xs:sequence>
</xs:complexType>