Before publishing your course, any hard rule issues must be resolved. To check for errors, click the "Scan Content for Errors" button in the upper-right corner of the page.

Once the scan is finished, a list of any detected issues will be displayed, allowing you to review and address them one by one.

These rules and notes will apply to all aspects of your course, including fields, assets, images, and videos. This process helps ensure your course is in good shape before submitting it for review.