The eHBL and Close Message issued prior to loading at origin could be cancelled and new eHBL and Close Messages transmitted, with the rail carrier’s Primary CCN. However, it might be easier simply to Change the data elements of the original eHBL that need changing (such as the Primary CCN in the eHBL data set and/or the Previous CCN in the Close Message.) Changes before Arrival need not affect the 8000 CCN, which may have already been issued to the Customs Broker, for example.