@Detected You have used the Get action and are adding your body to the headers. You need to use POST request - you can change the method to DELETE in the Post action
The long answer is that BAS has its own internal code generator, which means that everything in the BAS XML was generated by that system.
However, I strongly do not recommend writing code by hand. It will be extremely difficult to update and understand the code later based on what you wrote today.
