The carrier or its agent lodges an advance electronic cargo declaration at export and/or import: for maritime containers before loading onto the vessel, for other modes before arrival at the Customs office; Customs asks for no more than Annex II data and should consider letting users supply better, earlier data, including input from online marketplaces, supply chain management networks and similar service providers.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.