This improvement comes after EZP-24851.

If an error occurs during the publishing of a content, a generic message Error occurred while publishing an article is giving as feedback to the user what - specially if is big with lots of different types - does not helps the user to figure out what is wrong and describe the problem to the IT.

H4. Examples where relevant error messages would be relevant

• If the user tries to upload an image that fails to meet the minimum, it would make all the difference to have something like "The image's width must be at least 999px".

• If the user don't have permissions based on his role, instead " Failed to load the location /api/ezp/v2/content/locations/1/5 " something friendlier.

• If the user tries to delete something he cannot based on his permissions, something else than "User does not have access to 'read' 'content' with: contentId '303'".