How to implement Delete service call using ServiceStack

Question

I have couple of questions related to REST service implementation using ServiceStack.

1. For GET operation, I define my request DTO as below :

Answer 1

I got the fix for my 2nd question from following two links : 1. Link1 2. Link2

I don't fully understand this fix but doing above changes worked for me and now I can call Delete function from any clients.

For 1st question, pls refer @mythz 's reply below in detail.