What does “wezwanie” mean?

Official request. They want you to do something — come in, send papers or pay — by a set date.

You may see it in letters from

Urząd Skarbowy — Tax office
ZUS — Social insurance
Urząd Wojewódzki – Wydział Spraw Cudzoziemców — Voivodeship office (residence permits)
Policja / Straż Miejska — Police or city guard
GITD / CANARD — Road transport inspection (speed cameras)
Powiatowy Urząd Pracy (PUP) — Job centre

“wezwanie” is a Polish word used in official letters in Poland. Briefly explains words like this automatically when you check a letter.