product registration- only the main language is mandatory

Guys, how or what code to use to create an ocmod. to save mandatory titles and descriptions only in the main language, the others remain blank until I edit the product and put the text in it. In front, the user when selecting another language of the main product that does not have the titles and description is directed to Home if

Opencart version? Theme being used?
Most likely you need to work with

admin/controller/catalog/product.php (filter non-default languages)
catalog/controller/product/product.php (redirect when missing data)