FeedError.DUPLICATE_FEED_NAME

[Hunter]

For the past few days our FeedService test has been failing due to this 
error: [FeedError.DUPLICATE_FEED_NAME @ operations[0].operand.name]. I am 
confused by this because before we run this test we are verifying that the 
only sitelinks feed that exists is the main ADWORDS feed. 

Here are the relevant request and response: 

*REQUEST*
<SOAP-ENV:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/";>
  <SOAP-ENV:Header>
    <RequestHeader 
xmlns="https://adwords.google.com/api/adwords/cm/v201406";>
      <clientCustomerId 
xmlns="https://adwords.google.com/api/adwords/cm/v201406";>3302759889
      </clientCustomerId>
      <developerToken 
xmlns="https://adwords.google.com/api/adwords/cm/v201406";>REDACTED
      </developerToken>
      <userAgent 
xmlns="https://adwords.google.com/api/adwords/cm/v201406";>REDACTED
      </userAgent>
      <validateOnly 
xmlns="https://adwords.google.com/api/adwords/cm/v201406";>false
      </validateOnly>
      <partialFailure 
xmlns="https://adwords.google.com/api/adwords/cm/v201406";>false
      </partialFailure>
    </RequestHeader>
  </SOAP-ENV:Header>
  <SOAP-ENV:Body>
    <mutate xmlns="https://adwords.google.com/api/adwords/cm/v201406";>
      <operations>
        <operator>ADD
        </operator>
        <operand>
          <name>REDACTED
          </name>
          <attributes>
            <name>SitelinkName
            </name>
            <type>STRING
            </type>
          </attributes>
          <attributes>
            <name>SitelinkUrl
            </name>
            <type>URL
            </type>
          </attributes>
          <attributes>
            <name>SitelinkDescription1
            </name>
            <type>STRING
            </type>
          </attributes>
          <attributes>
            <name>SitelinkDescription2
            </name>
            <type>STRING
            </type>
          </attributes>
          <origin>USER
          </origin>
        </operand>
      </operations>
    </mutate>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

*RESPONSE*
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/";>
  <soap:Header>
    <ResponseHeader 
xmlns="https://adwords.google.com/api/adwords/cm/v201406";>
      <requestId>000504381a21ce010aec1e02f0000a68
      </requestId>
      <serviceName>FeedService
      </serviceName>
      <methodName>mutate
      </methodName>
      <operations>1
      </operations>
      <responseTime>166
      </responseTime>
    </ResponseHeader>
  </soap:Header>
  <soap:Body>
    <soap:Fault>
      <faultcode>soap:Server
      </faultcode>
      <faultstring>[FeedError.DUPLICATE_FEED_NAME @ 
operations[0].operand.name]
      </faultstring>
      <detail>
        <ApiExceptionFault 
xmlns="https://adwords.google.com/api/adwords/cm/v201406";>
          <message>[FeedError.DUPLICATE_FEED_NAME @ 
operations[0].operand.name]
          </message>
          <ApplicationException.Type>ApiException
          </ApplicationException.Type>
          <errors xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xsi:type="FeedError">
            <fieldPath>operations[0].operand.name
            </fieldPath>
            <trigger>
            </trigger>
            <errorString>FeedError.DUPLICATE_FEED_NAME
            </errorString>
            <ApiError.Type>FeedError
            </ApiError.Type>
            <reason>DUPLICATE_FEED_NAME
            </reason>
          </errors>
        </ApiExceptionFault>
      </detail>
    </soap:Fault>
  </soap:Body>
</soap:Envelope>

Is there any other reason we would be getting this error back? 


(Note: I will be happy to give more information if needed) 
Thanks. 
Hunter. 

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