When creating your own Blueriq as a Service (BaaS), it is possible to include a justification tree in your response to the caller of the webservice. This tree explains how a certain attribute was derived by the inference engine.

To do this, you need the custom schema element 'AQ_JustificationTree', which is part of the AquimaLibrary. If you open this schema element, you find under the 'xsd' tab the following xsd:

<?xml version="1.0" encoding="utf-8"?>
  <xs:schema
     targetNamespace="http://aquima.com/schemas/justificationTree/1.0"
     xmlns="http://aquima.com/schemas/justificationTree/1.0"
     xmlns:xs="http://www.w3.org/2001/XMLSchema">
  
     <xs:element name="justificationTree">
         <xs:complexType>
            <xs:sequence>
               <xs:element ref="attribute" minOccurs="1" maxOccurs="1"/>
            </xs:sequence>
         </xs:complexType>  
     </xs:element>
    
    <xs:element name="attribute" type="attributeType"/>
    
    <xs:complexType name="attributeType">
       <xs:sequence>
          <xs:element name="value" minOccurs="0" maxOccurs="unbounded" type="xs:string"/>
          <xs:element name="justification" minOccurs="0" maxOccurs="1" type="xs:string"/>
          <xs:element ref="attribute" minOccurs="0" maxOccurs="unbounded"/>
          </xs:sequence>
    </xs:complexType>
 </xs:schema>

You need to make this XSD part of the response of your AAAS. The easiest way is to save the justification XSD in a separate file and use the <import> statement in your own XSD. After importing your WSDL/XSD with the justification tree in it, go to the Schema Set Editor and open the justification tree element. You will see the following window.

1. Choose AQ_JustificationTree. If it is not in the list, there is probably something wrong with the namespaces in your XSD.
2. Choose the name of the entity of which you want to justify an attribute
3. The attribute you want to justify.
4. If you want to use a different asset format, you can specify this here. The default is 'Text'.