2016-03-08 13:05:11 WARN soapXmlLogger:84 - SOAP Request:
<soapenv:Header>
<ns1:clientCustomerId>12345567</ns1:clientCustomerId>
<ns1:developerToken>frgergergergergerger</ns1:developerToken>
<ns1:userAgent>Test (AwApi-Java, AdWords-Axis/2.10.0, Common-Java/2.10.0, Axis/1.4, Java/1.7.0_95, maven)</ns1:userAgent>
<ns1:validateOnly>false</ns1:validateOnly>
<ns1:partialFailure>false</ns1:partialFailure>
</ns1:RequestHeader>
</soapenv:Header>
<soapenv:Body>
<operations>
<operator>ADD</operator>
<operand>
<adGroupId>26179982219</adGroupId>
<type>PRODUCT_PARTITION</type>
<partitionType>UNIT</partitionType>
<parentCriterionId>-1</parentCriterionId>
<caseValue xsi:type="ns2:ProductOfferId">
</caseValue>
</criterion>
</operand>
</operations>
</mutate>
</soapenv:Body>
</soapenv:Envelope>
While making above request getting ERROR : "AdGroupCriterionError.PRODUCT_PARTITION_DOES_NOT_EXIST"
can someone point out what is wrong with this soap request.