Changes done in  4.00

=>We have used web API routing in 4.00 earlier we worked with WCF service .
=>We have added a class to display errors, which have two properties Status and Error Message.

=>Before we use to send ApiSecretKey in body , but in 4.00 we are sending API Secret key in header itself.
=>Changes in request parameters are provided in document under Generating Normal Call

=>We have not made any changes with settings name and tables name too.