I create a adgroup but I don't know why it has a default mobile bid modifier -22%. I can get this result from search, if I found. It said. No existing bid modifier.
<?xml version="1.0" encoding="UTF-8"?><soapenv:Envelope xmlns:soapenv="
http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="
http://www.w3.org/2001/XMLSchema" xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Header>
<ns1:RequestHeader xmlns:ns1="
https://adwords.google.com/api/adwords/cm/v201502" soapenv:mustUnderstand="0">
<ns1:clientCustomerId>1064338804</ns1:clientCustomerId>
<ns1:developerToken>830PTB1xlR8Qs0QsDj2swg</ns1:developerToken>
<ns1:userAgent>ebay.com:Nebula:V201502 (AwApi-Java, AdWords-Axis/2.0.0, Common-Java/2.0.0, Axis/1.4, Java/1.7.0, maven)</ns1:userAgent>
<ns1:validateOnly>false</ns1:validateOnly>
<ns1:partialFailure>false</ns1:partialFailure>
</ns1:RequestHeader>
</soapenv:Header>
<soapenv:Body>
<mutate xmlns="
https://adwords.google.com/api/adwords/cm/v201502">
<operations>
<operator>SET</operator>
<operand>
<campaignId>206603331</campaignId>
<adGroupId>
19156418931</adGroupId>
<criterion xmlns:ns2="
https://adwords.google.com/api/adwords/cm/v201502" xsi:type="ns2:Platform">
<ns2:id>30001</ns2:id>
</criterion>
<bidModifier>0.8181817531585693</bidModifier>
</operand>
</operations>
</mutate>
</soapenv:Body>
</soapenv:Envelope>
<?xml version="1.0" encoding="UTF-8"?><soap:Envelope xmlns:soap="
http://schemas.xmlsoap.org/soap/envelope/">
<soap:Header>
<ResponseHeader xmlns="
https://adwords.google.com/api/adwords/cm/v201502">
<requestId>00051830ba1920780ac49f472c007cea</requestId>
<serviceName>AdGroupBidModifierService</serviceName>
<methodName>mutate</methodName>
<operations>1</operations>
<responseTime>180</responseTime>
</ResponseHeader>
</soap:Header>
<soap:Body>
<soap:Fault>
<faultcode>soap:Server</faultcode>
<faultstring>[EntityNotFound.INVALID_ID @ operations[0].operand.criterion; trigger:'No existing bid modifier for AdGroupId:
19156418931 CriterionId{id=30001}']</faultstring>
<detail>
<ApiExceptionFault xmlns="
https://adwords.google.com/api/adwords/cm/v201502">
<message>[EntityNotFound.INVALID_ID @ operations[0].operand.criterion; trigger:'No existing bid modifier for AdGroupId:
19156418931 CriterionId{id=30001}']</message>
<ApplicationException.Type>ApiException</ApplicationException.Type>
<errors xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance" xsi:type="EntityNotFound">
<fieldPath>operations[0].operand.criterion</fieldPath>
<trigger>No existing bid modifier for AdGroupId:
19156418931 CriterionId{id=30001}</trigger>
<errorString>EntityNotFound.INVALID_ID</errorString>
<ApiError.Type>EntityNotFound</ApiError.Type>
<reason>INVALID_ID</reason>
</errors>
</ApiExceptionFault>
</detail>
</soap:Fault>
</soap:Body>
</soap:Envelope>