WordPress Plugin in codecanyon

I made a WordPress plugin to sell in http://codecanyon.net/ (Envato market). The plugin works fine and there is no error. But codecanyon is saying that it does not fulfill the technical standard codecanyon. I need to know: *What is the standard for the WP plugin of codecanyon *. I need a direction from where I can learn the standard coding for the WP plugin of codecanyon . Please help me and thanks in advance.

via Chebli Mohamed