Summary:

After clicking the "Create KB Article" button, if a user did not used the "Execute As" user credentials that is being set up on Confluence side, user will get "Not Permitted" page instead.

Steps to Reproduce:

1. Create a Confluence Space and a user that is allowed to view and create page in the Space
2. Configure the Application link as mentioned in Serving Customers with a knowledge base
3. Use the "Execute As" configuration instead on Confluence Oauth Incoming Authentication instead of the Impersonation and use the previous created user.
4. Log out from Confluence and linked the previously created Confluence Space on a service desk project.
5. Then, open an existing issue on the project and click "Create KB Article"
6. Log in as an admin of the Confluence instead of the "Execute As" user.

Expected Results:

• The user will have the draft page with the details about the issue to be created as a KB page.

Actual Results:

• There will be a "Not Permitted" page shown.