Effective immediately, the Schedule B, Harmonized Tariff Schedule (HTS), and HTS Codes That Are Not Valid for AES tables have been updated to accept the changes to the January 1, 2020 codes.
AES will accept shipments with outdated codes during a grace period for 30 days beyond the expiration date of December 31st, 2019. Reporting an outdated code after the 30-day grace period will result in a fatal error.
The ACE AESDirect program has been updated with the 2020 codes and will accept shipments with outdated codes during the grace period.
Note: Effective January 1st, 2020, “X – No Unit Required” is no longer an acceptable Unit of Measure in AES for most commodity classification codes. There will be no grace period for this change.

The 2020 Schedule B and HTS tables are available for downloading at:
http://www.census.gov/foreign-trade/aes/documentlibrary/#concordance

The current list of HTS codes that are not valid for AES are available at:
http://www.census.gov/foreign-trade/aes/documentlibrary/concordance/hts-not-for-aes.html