Zawiadczenie
Zawiadczenie is not a standard term in Polish. The spelling is most likely a misspelling of either zaświadczenie or zawiadomienie. This article explains the two related concepts and their typical uses, to help distinguish them in formal language.
Zaświadczenie is an official document that certifies facts or statuses, issued by an authority or institution.
Zawiadomienie is a notice or notification intended to inform a person or an entity about a fact,
Spelling and usage: in contemporary Polish, zaświadczenie and zawiadomienie are the correct forms. Zawiadczenie is generally