On March 18, 2023, it is anticipated that U.S. Customs and Border Protection will require the input of Chinese postal codes into the ACE entry process.

The ACE deployment schedule indicates the following.

The UFLPA Region Alert will add three new validations that will be performed when Country of Origin is China for Entry and for Manufacturer Identification Code (MID) creation for both Trade and CBP users.

  • Postal code will be a required field
  • Users will receive an error message if the postal code provided is not a valid Chinese postal code
  • Users will receive a warning message when a Uyghur region postal code has been provided
  • Ability to update an existing MID with a postal code
  • Includes EDI Impacts


For any questions regarding these upcoming changes, please contact the Maersk Customs Services Trade Compliance team in North America at compliance.mcsi.nam@maersk.com.

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