Can Air AMS participants change previously transmitted air waybill information in Air AMS?

Can Air AMS participants change previously transmitted air waybill information in Air AMS?

Yes. Air AMS participants are required to report changes to air waybill information through Air AMS.  Changes to air waybill information may be reported to Air AMS through the Freight Report Change (FRC) message.  Air waybill records may also be deleted using the Freight Report Cancellation (FRX) message.  All Manifest Discrepancy Reports (MDRs) must be made in the time frames required by the Customs regulations, currently no later than 30 days after aircraft entry.  Each time that information is changed for an air waybill record, the cargo is subject to additional targeting and possible examination.  For further information on the use of FRC and FRX messages, please review the Customs Automated Manifest Interface Requirements – Air (CAMIR-Air) document.