Quote Originally Posted by wheat View Post
EVEN if you think you are doing this, I have had the "no model field" issue for no apparent reason.

So: bookmarked this message:
https://www.zen-cart.com/showthread....ield-in-record

solves the problem every time - I have learned to use Save As and follow these instructions

Hope this helps you

Wheat
Good information to address such usage. If I understand correctly about the recent situation, when product has been exported, and the file then immediately imported, the no model_id response is still received at that store.

I visually reviewed the file and didn't see any issues with the formatting but also didn't have a chance yet to try importing it to a test store to see the result.

Because of the lack of detail from the code to identify what the primary key is (issue to be addressed), would want to know the settings in the configuration panel for EP4. Although there are several settings, if products_id or blank_new was selected with the current/recent file then the error seen would be consistent.

Alternatively I am wondering if the various language/encoding settings of the site/database could be the issue.