Custom role can't create permalink

Question

My user post a new custom type "artprim_item" and it doesn't work unless I remove permalinks. The item is created, but the permalink links to "item not found".

More importantly, if I open the item with my admin account and update it, the permalink works at last.

Since I only want him to see "artprim_item" and no "page, posts, links...)" , this user has a role that I created with limited capacities:

• delete_artprim_item
• edit_artprim_item
• edit_artprim_items
• edit_others_artprim_items
• publish_artprim_items
• read_artprim_item
• read_private_artprim_items
• upload_files
• edit_files
• read

Is there a capacities to create permalinks?

Answer 1

Found that it works if I add the edit_posts capacity.

But Posts is now visible in Admin :(

At the same time, it also fixed a problem I had with Media upload: the user could never edit right after the upload.