Margin, Holding, OrderBook broken, says "Invalid head parameters". Please help.

[AmoghaR]

{ "head": { "password": "", "appVer": "1.0", "appName": "", "requestCode": "ex:IIFLMarRQMarginV3", "osName": "Android", "userId": "", "key": "" }, "body": { "ClientCode": "" } }

with headers : Ocp-Apim-Subscription-Key, Cookie and Content-Type

URL : POST https://dataservice.iifl.in/openapi/prod/Margin

response:

{ "body": null, "head": { "responseCode": "IIFLMarRQMarginV3", "status": "2", "statusDescription": "Invalid head parameters." } }

Please help! It was working now broken, tested in Java.