Promotion Announcement (889) is used by distributors, wholesalers, and retailers to communicate promotional offers, allowances, and pricing conditions to their trading partners. Typically sent by suppliers or manufacturers to buyers, this transaction set announces new promotions and establishes the terms under which they apply. The G42 segment identifies the promotion itself, the G62 segment(s) specify effective dates and times, and the N1 loop defines the parties involved in the promotion (such as the buyer, distributor, or end-customer eligible for the offer).

Consider a food manufacturer like ConAgra sending a promotion announcement to a regional grocery distributor, MidAmerica Foods. ConAgra uses the 889 to announce a 10% promotional allowance on cases of canned vegetables running from March 1 through June 30, specifying that the allowance applies when MidAmerica Foods purchases minimum quantities. The N1 loop identifies MidAmerica Foods as the recipient, the G42 segment contains the promotion number and description, G62 segments mark the start and end dates, and the G46 segment in the LX loop details the allowance percentage and conditions. MidAmerica Foods receives this announcement to update their systems and plan their purchasing strategy accordingly.