Thanks for posting.
In some cases, publishing individual items would break your site. In these instances, we prevent you from being able to push single item updates. These instances include:
- Your site hasn’t been published
- The structure of the Collection for that item (or a referenced item) has changed
- You have multiple domains published at different times
- The item’s references create circular dependencies (for example, a blog post has an author, the author has a client, and the client has a blog post)
In each of these situations, the fix would be to publish your entire site (to all domains) to make sure everything’s in sync.
I hope this helps and let me know if you have other questions.