When the passenger brings merchandise by which he must pay taxes, if its value is greater than the determined amounts for the import by means of simplified procedure of passengers or is subject to regulations and you do not have them, it will be necessary that the import proceeding is made by conduit of customs agent. In these cases, the passenger will have to leave the merchandise in deposit before the customs and will have to contract the services of a customs agent so that he carries out the respective proceeding of import. If before activating the mechanism, he detects that he brings merchandise that are subject to permissions or other regulations and it does not count on the permissions, you can choose to show before the customs his will to leave the merchandise.