title: Rest Post Multipart form data - spot the difference
body: <p>I have the following rest request that works:</p>
  
  <p><a href="https://i.stack.imgur.com/bRqAd.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/bRqAd.png" alt="enter image description here"></a></p>
  
  <p>And the following one that doesn't work:</p>
  
  <p><a href="https://i.stack.imgur.com/EFUyx.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/EFUyx.png" alt="enter image description here"></a></p>
  
  <p>And here is the the response from the bad message:
  <a href="https://i.stack.imgur.com/ajcyR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ajcyR.png" alt="enter image description here"></a></p>
  
  <p>The bad response was run through PowerShell but it shouldn't matter as I can see everything that is getting sent in Fiddler.</p>
  
  <p>Can anyone spot what I have done wrong in the bad request?</p>