Traceability

[andreas-electi]

Given an EPC of a Final Product, I want to trackback to the initial primary materials. Is this functionality already implemented?

[louisaxel-ambroise]

Hi,

This project is only a repository of EPCIS events with capture/query interfaces.
So assuming you sent the correct TransformationEvent to keep track of the different transformations from the primary materials to the finished goods, you should be able to retrieve the correct information using the following filters:

• MATCH_outputEPC (or MATCH_outputEpcClass)
• eventType
• EQ_action

Using EPCIS 1.2, you can use something like the following query:

POST https://{{baseUrl}}/v1_2/Query.svc
Content-Type: text/xml

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:urn="urn:epcglobal:epcis-query:xsd:1">
  <soapenv:Body>
    <urn:Poll>
    	<queryName>SimpleEventQuery</queryName>
    	<params>
            <param>
                <name>eventType</name>
                <value>TransformationEvent</value>
            </param>
            <param>
                <name>EQ_action</name>
                <value>ADD</value>
            </param>
            <param>
                <name>MATCH_outputEPC</name>
                <value>{{your_finished_goods_EPC}}</value>
            </param>
    	</params>
	</urn:Poll>
  </soapenv:Body>
</soapenv:Envelope>

The inputQuantityList and inputEpcList values of the response events will contain the materials used to produce the finished goods.