AdWords API ReadOnlyError.READ_ONLY

[Suraj Khakurel]

Hi, 

While working on AdGroup mutate (SET). i got the following  error:
[ReadOnlyError.READ_ONLY @ operations[0].operand.bids.bidSource, 
ReadOnlyError.READ_ONLY @ operations[1].operand.bids.bidSource]

I did not assign any BidSource. i don't understand why I'm getting this error.

Here is my request and response xml.

Thanks for your help

-Suraj

Xml Request
<mutate xmlns="https://adwords.google.com/api/adwords/cm/v200909";>
      <operations>
        <operator>SET</operator>
        <operand xsi:type="ns2:BiddableAdGroupCriterion" 
xmlns:ns2="https://adwords.google.com/api/adwords/cm/v200909";>
          <adGroupId>***5237417</adGroupId>
          <criterion xsi:type="ns2:Keyword">
            <id>***05211437</id>
            <Criterion.Type>Keyword</Criterion.Type>
            <text>particulier domiciliations postales</text>
            <matchType>EXACT</matchType>
          </criterion>
          <bids xsi:type="ns2:ManualCPCAdGroupCriterionBids">
            
<AdGroupCriterionBids.Type>ManualCPCAdGroupCriterionBids</AdGroupCriterionBids.Type>
            <maxCpc>
              <amount>
                <microAmount>6610000</microAmount>
              </amount>
            </maxCpc>
            <bidSource>CRITERION</bidSource>
          </bids>
        </operand>
      </operations>
      <operations>
        <operator>SET</operator>
        <operand xsi:type="ns3:BiddableAdGroupCriterion" 
xmlns:ns3="https://adwords.google.com/api/adwords/cm/v200909";>
          <adGroupId>***5237417</adGroupId>
          <criterion xsi:type="ns3:Keyword">
            <id>***05211527</id>
            <Criterion.Type>Keyword</Criterion.Type>
            <text>domiciliation pour particuliers postales</text>
            <matchType>EXACT</matchType>
          </criterion>
          <bids xsi:type="ns3:ManualCPCAdGroupCriterionBids">
            
<AdGroupCriterionBids.Type>ManualCPCAdGroupCriterionBids</AdGroupCriterionBids.Type>
            <maxCpc>
              <amount>
                <microAmount>6610000</microAmount>
              </amount>
            </maxCpc>
            <bidSource>CRITERION</bidSource>
          </bids>
        </operand>
      </operations>
    </mutate>


Response
<soap:Fault>
    <faultcode>soap:Server</faultcode>
    <faultstring>[ReadOnlyError.READ_ONLY @ 
operations[0].operand.bids.bidSource, ReadOnlyError.READ_ONLY @ 
operations[1].operand.bids.bidSource]</faultstring>
    <detail>
      <ApiExceptionFault 
xmlns="https://adwords.google.com/api/adwords/cm/v200909";>
        <message>[ReadOnlyError.READ_ONLY @ 
operations[0].operand.bids.bidSource, ReadOnlyError.READ_ONLY @ 
operations[1].operand.bids.bidSource]</message>
        <ApplicationException.Type>ApiException</ApplicationException.Type>
        <errors xsi:type="ReadOnlyError" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
          <fieldPath>operations[0].operand.bids.bidSource</fieldPath>
          <trigger/>
          <ApiError.Type>ReadOnlyError</ApiError.Type>
          <reason>READ_ONLY</reason>
        </errors>
        <errors xsi:type="ReadOnlyError" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
          <fieldPath>operations[1].operand.bids.bidSource</fieldPath>
          <trigger/>
          <ApiError.Type>ReadOnlyError</ApiError.Type>
          <reason>READ_ONLY</reason>
        </errors>
      </ApiExceptionFault>
    </detail>
  </soap:Fault>

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