As the templates are customized on each project, individual and discussed solutions are made of missing knowledge, not accessible information, or the try on simplifying information due a point of view on notability, fields of the template in an other language often do not match.
Infoboxes are templates (like :en:template:my_example_template), created in the local project. If there's none, create one. Depending on users opinions, some want to remove the whole template, or have it store less or unnecessary redundant information. As a result we have an incompatibility in templates.
In case of doubt, leave empty and fix later. Your will find a documentation and project language links by entering in the search field: template:infobox …
The CXT only assist You matching fields and data of the equivalent templates on both languages.