The new Manifestación de Valor Electrónica (MVE) requirement shifts Mexico’s customs value declaration process from paper to digital, requiring importers to electronically submit shipment values along with supporting documentation before freight clears customs. While many companies have focused on the mechanics of filing the new declaration electronically, Lau said the larger challenge is ensuring every document associated with a shipment contains consistent information. “What we see with some of our customers is they make use of technology,” Lau said.