In order to simplify the work of business entities engaged in the circulation of food products subject to marking, and to provide an adaptation period for resolving technical issues related to entering marking code information into electronic invoices, including for goods imported from the Russian Federation, Resolution No. 8/91/45/27 has been adopted. 

More details

on the official website of the Ministry

of Taxes and Duties of the Republic of Belarus

https://nalog.gov.by/clarifications/comments/32478/