The request was unsuccessful due to a conflict in the state of the resource. For example, you may get a 409 error if you try to upload a file to the Web server which is older than the one already there - resulting in a version control conflict.

Conflicts are likely to occur where an inappropriate alteration of the resource is being attempted.

The problem can only be resolved by examining what your client system is trying to do and then discussing with your ISP why that behaviour is not allowed. If you are monitor your website through 100pulse, we will intimate whenever you encounter 409 status code error through e-mail or Short message service.