Problem: The client was experiencing an 'Invalid Post Type' error when trying to translate posts in a custom post type called Reviews. Upon switching the language to English, the error appeared, despite the post type configuration seeming correct. Solution: We resolved the issue by modifying the translation settings for the custom post type. In the WPML -> Settings -> Post Types Translation section, we changed the 'Post Type' (acf-post-type) from Translatable to Not translatable. This adjustment allowed the client to switch and edit a Review post in English without encountering the 'Invalid Post Type' error.
If this solution does not resolve your issue, or if it seems outdated, we recommend checking the related known issues, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. Should the problem persist, please open a new support ticket.
