To make a successful PUT(Update) call you need to follow below steps. We will use 'Gateway Client' for testing.
1. Implement Get_Entity and Update_Entity methods.
2. Fire the Get_Entity method and fetch the XSRF token and click on 'Use as Request' button.
3. Change the values you want to update in the request body.
4. Fire the Update_Entity method.
5. The results should be updated.
BR.