REST API

Hi Darek Oleksy, 

The filter endpoint can be used both with a GET or a POST request. 

From your print screen, it seems you are using a GET request, for that to work you would need to add the filter criteria in the URL instead of the body. Something like this: 

https://<yourSugarURL>/rest/v11_16/Contacts?filter%5B0%5D%5Bassigned_user_id%5D%5B%24in%5D%5B%5D=<AssignedUserID>

However, to avoid issues due to long URL the best is to use POST requests. 

For that you need to add the /filter/ endpoint to the end of the URL, something like this: 

https://<yourSugarURL>/rest/v11_16/Contacts/filter

And add the filter in the body. As the Assigned user is a relationship the best is to filter for the user ID.
You can add the information of the fields to retrieve in the filter body, on this example it will only retrieve the name (the id and date modified are retrieved by default)

{  
   "filter":[  
      {  
        "assigned_user_id":"<theUserID>"
      }
   ],
   "fields":"name"
}

I hope this helps, 

André

Thank you very much André. I appreciate your help.

Thank you very much André. I appreciate your help.