Russian Economic Development Ministry has clarified the terms of return enforce a contract

According to the agency funds pledged as collateral execution of the contract, the customer must return the supplier (contractor, executor) after the execution of the principal obligation of the contract. The exception to this rule is when the contract provides that the provision of its execution is returned after the expiration of the warranty.

Public authority noted that the warranty on the subject of the contract is not require collateral from the supplier (contractor, executor), unless otherwise provided by contract. This opinion was contained in a letter from the Economic Development of Russia 31.12.2014 N D28i-2865.