Can the FOP of the 3rd group document its own business trip to Ukraine?

Yes, it can be documented, but there is no need for this.

The entrepreneurial activity of the CCP is not regulated, and therefore, the FOP decides such organizational issues at its own discretion. In addition, the FOP disposes of its own funds, therefore, drawing up employment documents, submitting an advance report (on the use of funds), etc., is provided only for employees.