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									            ACE CAMIR-AIR - Customs Automated Manifest Interface Requirements

                         Message Overview
                                     Version: February 11, 2009

                    Brief description of how messages are constructed and how
                          message formats are presented in this document.

The reader should be advised that any decisions, policies, and solutions set forth in this DRAFT
technical document are subject to change at any time without prior notice. This DRAFT
technical document is not FINAL and does not represent the totality of revision/changes that may
be implemented with Entry Summary Accounts Revenue (ESAR) functionality. Until such time
that CBP issues a FINAL version of this technical guide, the attached DRAFT technical
document is NOT considered approved, endorsed, or sanctioned by Customs and Border
Protection and the Department of Homeland Security.

U.S. Customs and Border Protection (CBP) Air AMS syntax is based upon a syntax known as the
International Air Transport Association Cargo Interchange Messaging Procedures (IATA CARGO-

Air AMS thus utilizes a character string equivalent to a carriage-return and line feed to represent
termination of a message line and the forward slant „/‟ as a field delimiter within the message line.
This format is used rather than a fixed record format to be compatible with the IATA CARGO-IMP
requirements. Strict requirements for input fields include edits for the positioning, validation and
logic of all the fields. Air AMS will continue to mature with the needs of the Trade as well as the
needs of CBP.

Air AMS utilizes different message types for different business needs. Air AMS messages are
comprised of individual message lines some, but not all of which, begin with a Line Identifier.
Message lines must adhere to the prescribed sequence based upon the message type including all
mandatory message lines related to the message type.

Message line status of “O” (Optional) indicates the manifest data is not required for validation of the
message type, but may be required for CBP to release Freight Status Notification (FSN) messages.
FSNs reference such things as entry processing and/or transfer authorization. Note: Some message
lines contain multiple data elements, some of which are conditional, optional or mandatory. Most
manifest data elements within a message line are separated by the forward slant „/‟, therefore all
prospective Air AMS trade users should ensure that user-entered free-format alphanumeric data does
NOT contain a user-entered slant character.

For a complete list, refer to the Message Types chapter of this document.

    February 2009                   DRAFT - Message Overview – DRAFT                          MSO-1
            ACE CAMIR-AIR - Customs Automated Manifest Interface Requirements

                        Message/Line Table Layout
1. Table Headers - Contain a description of the message/line data that the table is defining.

2. Column Headers - Describe the type of data contained in the associated column.

   A. Element/Data Element - Identifies the elements/data elements of each line.

   B. Element Description – Message types table only

   C. Length/Class – Describes the format of each data element. Line table only

   D. Status – Contains a code with the following meaning:

              „M‟ – Element is mandatory, needed for successful processing of the message type.

              „C‟ – Element is conditional, not needed for successful processing of the message
           type. The element may be required based on the factors associated with the function.

              „O‟ – Element is optional, not needed for successful processing of the message type.
           The element may be necessary to complete the manifest record for release of the freight
           status notification message(s).

   E. “Notes” – Contains a number that refers to text under „Notes‟ describing information
      pertinent to the element.

    February 2009                 DRAFT - Message Overview – DRAFT                         MSO-2

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