EN
The aim of the article is to present the issues of preparing applications in the administrative procedure in the official language, i.e. Polish, and the permissible (statutory) exceptions in this regard. In some administrative proceedings, it is possible to draft the application in a supporting language or in a foreign language, most often English. The study also addresses the issue of how to remove the lack of a formal application, consisting in submitting it in the wrong language, as well as the issue of preparing an application in an inappropriate language.