How to allow http POST, PUT, DELETE requests in windchill 10.2?

Hello everyone,

In windchill 10.2, i provide some rest services, all GET services works fin! But when the request is POST, PUT... i get this message as response for my request with the status '412 Precondition Failed' :

A potential security problem was detected. Refresh the page and try again. If the problem persists, contact your administrator.

How can i allow POST, PUT, DELETE.. requests in windchill 10.2?

Thanks.