MSC-FAL.1/Circ.1 provides information on the WCO's "SAFE
Framework of Standards", which in its "Customs to Customs" pillar
encourages the usage by Customs Authorities of advance electronic
information as part of a risk-based cargo security strategy.
Requirements on the use of high security mechanical seals, as part of a
seal integrity programme for containers, form an important element of
this pillar. One of these requirements is that if public or private
officials remove a seal to inspect the container, they will install an
acceptable replacement seal and note the particulars of the action,
including the new seal number, in the cargo documentation.