Which of the following is NOT a type of core knowledge an AES filer must possess?

Understanding ocean freight regulations is not classified as a type of core knowledge necessary for an Automated Export System (AES) filer. An AES filer is primarily focused on the filing of export data as required by the U.S. Census Bureau and the Bureau of Industry and Security. Their core responsibilities involve accurate reporting of export shipments, which includes knowledge of commodity classification, understanding how to operate the AES system, and knowing U.S. export controls related to the items being exported.

In contrast, the other options focus on critical aspects of the AES filing process. Schedule B Commodity classification is essential for the proper statistical reporting of exports and ensures compliance with export regulations. Knowledge of the filer-level operation of the AES system is necessary for accurate and efficient filing, while familiarity with U.S. export controls is crucial to prevent illegal exports and to comply with national security laws. Thus, ocean freight regulations, which pertain more to shipping and transportation rather than the specifics of export data reporting, are not a core competency for AES filers.