Legal entities (excluding small businesses and certain financial organizations).
Приложение 3 к форме П-1 - Контур.Норматив
If you are looking for a review or guide on how to handle this today, here is the essential information:
This specific appendix was officially abolished starting with reports for January 2017. It is no longer required as a separate attachment to Form P-1.
The data previously collected in Appendix 3 (such as retail trade turnover and catering) is now integrated directly into Section 3 of the main Form P-1 .