Customs already checks the advance declaration prior to the arrival of the ship (ATA). If your customs agent were to wait with the subsequent declaration until the ATA, they would often encounter peak busyness at Customs.
Advance declaration + presentation notification are key
After the introduction of the CVB, would you like to have your customs formalities dealt with in the fastest and most efficient way in the Dutch ports? Then ask your customs agent to use an advance declaration + (automated) presentation notification. After having been unloaded (and following any physical inspections), the cargo can immediately leave the terminal.
Your customs agent can submit an advance declaration before the ship arrives in port. Upon arrival of the ship (ATA), your customs agent will next confirm the advance declaration with the presentation notification.