title: Azure DevOps - New work item rule with action on "Iteration" field
body: <p>I am trying to define new work item rule, and set action for field "Iteration", but it is not available.
  What is the problem, and how I can solve it?</p>
  
  <p><a href="https://i.stack.imgur.com/WVAwV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WVAwV.png" alt="enter image description here"></a></p>