The schema of version 1.00 of the NT 2021.001 has been published. The NT 2021.001 introduces the new NFe event “proof of delivery of the NFe”. The event registers a proof of delivery of the supply to its recipient, and can be used from 22 June 2021.The schema of version 1.00 of the NT 2021.001 has been published. The NT 2021.001 introduces the new NFe event “proof of delivery of the NFe”. The event registers a proof of delivery of the supply to its recipient, and can be used from 22 June 2021.