title: Google AdWords API v201802 via Python3 GoogleAds library "ReportDownloadError.INVALID_REPORT_DEFINITION_XML"
body: <p><strong>Problem Description:</strong></p>
  
  <ul>
  <li><p>Using a Google API development key for AdWords. Approved for Standard Access.</p></li>
  <li><p>Using the latest version of AdWords API: <code>v201802</code>.</p></li>
  <li><p>Using the <code>googleads</code> Python module to create all my report definitions and subsequent downloads.</p></li>
  <li><p>Works on Local, Staging, Demo, and Production environments with the same library code. </p></li>
  <li><p>Does not work on the Development server.</p></li>
  <li><p>All servers are running Ubuntu 17.10, exception Production which is running 16.10 LTS.</p></li>
  <li><p>In the <code>requirements.txt</code> file, <code>googleads&gt;=4.7.0</code> (this might be the core issue, maybe the version needs to be updated. However, this doesn't explain why the other servers work and Development doesn't.</p></li>
  <li><p>Doing a <code>pip freeze | grep googleads</code> results in <code>googleads==10.1.0</code>, which should be the latest version.</p></li>
  </ul>
  
  <p><strong>The error I'm getting:</strong></p>
  
  <pre><code>ReportDownloadError.INVALID_REPORT_DEFINITION_XML
  Trigger: Invalid ReportDefinition Xml: cvc-enumeration-valid: 
  Value '('CUSTOM_DATE',)' is not facet-valid with respect to enumeration 
  '[TODAY, YESTERDAY, LAST_7_DAYS, LAST_WEEK, LAST_BUSINESS_WEEK, 
  THIS_MONTH, LAST_MONTH, ALL_TIME, CUSTOM_DATE, LAST_14_DAYS, 
  LAST_30_DAYS, THIS_WEEK_SUN_TODAY, THIS_WEEK_MON_TODAY, 
  LAST_WEEK_SUN_SAT]'. It must be a value from the enumeration.
  </code></pre>
  
  <p>Any ideas or suggestions will help greatly! </p>
  
  <p><strong>UPDATE:</strong> Updated <code>pip</code> using <code>pip install -r requirements.txt --upgrade</code> and now <code>pip freeze | grep googleads</code> results in <code>googleads==11.0.1</code> and now my local branch is also not working. So the issue seems to be in the version of <code>googleads</code>. Reverting to <code>10.1.0</code> as the last known stable version.</p>