The Argentinean tax administration (AFIP) informed that the implementation of the electronic bill of transport (locally known as Carta Porte) required to transfer agricultural products has started. According to the Joint Resolution 5017/2021 issued by the AFIP and the ministries of Security, Transportation, and Agriculture, the mandatory use of the Carta Porte will start on November 1, 2021. For that purpose, was released version 1.2 of the Developer Manual. At the same time, the AFIP has informed that the testing period and voluntary implementation of the Carta Porte has already started, and their systems are ready for that purpose.
More official information is available here.