Urgent: Seeking Assistance with 403 Forbidden Error in XDP Form Submission via Servlet (OSGi Implementation)

We have converted existing PDF forms to HTML5 forms. Additionally, we have added the Submit button on the XDP form, and whenever a user clicks on the Submit button, it should invoke our servlet and perform the form submission. (OSGi implementation)

To achieve this, we have configured our servlet path in XDP properties under Submit URL.

But whenever we click the button, we get a 403 forbidden error. We have made all the necessary OSGi configurations, but still, this issue persists. It is entirely working on developer's local machine but not working in the AMS hosted environments. Has anyone encountered such an issue? If so, please help us fix it.