Is it not necessary to register activities in Poland?

...humanitarian aid work? Because in the village there is absolutely nothing to do with it. They say that no one wants to work with the village.

...period from the front line?

Is there a regulatory document that establishes these terms?

There is a cadastral number.

And if the ticket is in the Military Committee, is a substitute needed?

...to the general system, what exactly is the difference with regard to the payment of taxes of the EU, PDF, and national income tax?