Answers: <p>This is an indication that someone removed a field from work item configuration that was represented by <code>25</code>.  It's more of an issue of clean-up not being done when fields are removed.  See more about <a href="https://developercommunity.visualstudio.com/content/problem/260665/tf51535-in-client-tf400645-in-web-after-deleting-a.html" rel="nofollow noreferrer">this error</a> on Microsoft's Developer Community. </p>
  
  <p>This <a href="https://developercommunity.visualstudio.com/content/problem/476709/clone-test-plan-fails.html" rel="nofollow noreferrer">other item in the community</a> suggests a different problem when using a particular extension and a fix has been supplied.</p>
  
Answers: CC BY-SA 4.0
Answers: 2019-03-27T17:55:29.167Z
Answers: 2019-03-27T17:55:29.167Z
Answers: Sumo
Body: <p>Today I received an error when trying to clone test plans in Azure DevOps web portal. 
  Steps:</p>
  
  <ol>
  <li><p>In Visual Studio, I select the Test Case option</p></li>
  <li><p>I find the Test Plan I want to clone, select it , and then select the "Clone test plan" button.</p></li>
  <li><p>In the "Clone Test Plan" window, accept all defaults and click Clone.</p></li>
  </ol>
  
  <p>Result: an error is received: "Clone operation encountered a WorkItem Tracking error while processing test case xxxx. Retry the operation. Error details: TF51535: Cannot find field 25."</p>
  
  <p>It is extremely unfortunate that this issue happened today while I am trying to clone a large test plan. I will have to manually copy the hundreds of tests in order to have the new test plan ready for Monday morning.</p>
  
Tags: <azure-devops>
Title: WorkItem Tracking error when performing clone operation in Azure Devops
UserDisplayName: Yishu Wang
ThreadText: # WorkItem Tracking error when performing clone operation in Azure Devops
  
  (Asked by: username_0 on 2019-03-08)
  
  Today I received an error when trying to clone test plans in Azure DevOps web portal.
  Steps:
  
  1. In Visual Studio, I select the Test Case option
  2. I find the Test Plan I want to clone, select it , and then select the "Clone test plan" button.
  3. In the "Clone Test Plan" window, accept all defaults and click Clone.
  
  Result: an error is received: "Clone operation encountered a WorkItem Tracking error while processing test case xxxx. Retry the operation. Error details: TF51535: Cannot find field 25."
  
  It is extremely unfortunate that this issue happened today while I am trying to clone a large test plan. I will have to manually copy the hundreds of tests in order to have the new test plan ready for Monday morning.
  
  **Tags:** azure-devops
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2019-03-27. Score: 1
  
  This is an indication that someone removed a field from work item configuration that was represented by `25`. It's more of an issue of clean-up not being done when fields are removed. See more about [this error](https://developercommunity.visualstudio.com/content/problem/260665/tf51535-in-client-tf400645-in-web-after-deleting-a.html) on Microsoft's Developer Community.
  
  This [other item in the community](https://developercommunity.visualstudio.com/content/problem/476709/clone-test-plan-fails.html) suggests a different problem when using a particular extension and a fix has been supplied.
  
  
  ---
  
  