On December 3, 2021, in Informative Note 29, the Mexican government announced that the ATA Carnet trial period has been opened in the Single Window site. All cargo and passenger customs ports are in line with this new process. Beginning February 2022, all ATA Carnet entries must be done using the Single Window site.
For more information, please visit: https://www.ventanillaunica.gob.mx/vucem/meses/diciembre2021/Hoja%20Informativa%2029%20-%20Prueba%20piloto%20a%20nivel%20nacional%20de%20Cuadernos%20ATA%20en%20la%20VUCEM.pdf