JSONP获取404错误在IIS上部署时获取请求

I am using jquery AJAX with datatype jsonp. It is working fine on my local dev environment with huge amount of data. But when I deployed it on IIS it only works fine with a request of length less than 2121 characters, it gives 404 error for more than 2121 characters.I am using jquery AJAX with datatype jsonp. It