CSMS #48439244 - ACE Tips for Trade when Filing U.S. Fish and Wildlife Service Data. U.S. Customs and Border Protection sent this bulletin at 06/09/2021 12:40 PM EDT Cargo Systems Messaging Service CSMS #48439244 - ACE Tips for Trade when Filing U.S. Fish and Wildlife Service Data. An update to the following document is now available on CBP.gov: ACE Tips for Trade when Filing U.S. Fish and Wildlife Service Data.