Skip to main content

U.S. flag An official website of the United States government

Animal and Plant Health Inspection Service
U.S. Department of Agriculture
USDA FAQ's and resources about coronavirus (COVID-19).  LEARN MORE

Reminder: APHIS Fully Implements Core Message Set

The U.S. Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) reminds importers, brokers, and filers that the second and final phase of the APHIS Core Message Set rollout will begin on March 15, 2021. Starting on this date, APHIS will fully enforce APHIS Core Message Set in the Automated Commercial Environment (ACE) by raising the severity flag from “warning” to “reject”. When this changes, users will be required to submit message set data for regulated products like plants, plant products, animal products, and live dog imports or their entry will reject.

APHIS provides a multitude of resources that users may refer to including the APHIS ACE website, the APHIS Core Implementation Guide, the APHIS Supplemental Trade GuideAPHIS Core Message Set Webinars, the Harmonized Tariff  Schedule Flags Code, and much more. Brokers, filers and importers may also contact the APHIS Core Message Set Help Desk at 1-833-481-2102, Monday through Friday, 7:00 a.m. to 11:00 p.m. to get assistance with their entry, or they can submit APHIS Core Message Set questions by e-mail to

For more information on implementation of the APHIS Core Message Set, please read our previous stakeholder notice.

USDA touches the lives of all Americans each day in so many positive ways. In the Biden-Harris Administration, USDA is transforming America’s food system with a greater focus on more resilient local and regional food production, fairer markets for all producers, ensuring access to safe, healthy and nutritious food in all communities, building new markets and streams of income for farmers and producers using climate smart food and forestry practices, making historic investments in infrastructure and clean energy capabilities in rural America, and committing to equity across the Department by removing systemic barriers and building a workforce more representative of America. To learn more, visit

Complementary Content