The Supreme Court has summarised the practice of applying 44-Federal Law

The following conclusions are interesting:

- it is sufficient to provide for the possibility of unilateral withdrawal of the party from execution in the contract. It is not necessary to list specific grounds;

- even if the customer has not fully carried out the unilateral refusal procedure, It does not mean that customer did not notify the refusal properly. It is important that the notification is delivered to the performer.

Document: Review of the practice of applying legislation on the contract system, approved by the Presidium of Supreme Court of Russian Federation on June 28, 2017

(http://www.supcourt.ru/Show_pdf.php?Id=11474)