A system and method for synchronizing broadcast advertising inventory data between a broadcast vendor system and a media buyer's media resource planning system features a database that stores advertising inventory data received from the broadcast vendor system and the media buyer's resource planning system. A matching application in communication with the database performs a comparison between a previous package of advertising inventory data and a revised package of advertising inventory data. An analysis application in communication with the matching application and the database enables a user to review results of the comparison and directs uploading of the revised package of advertising data from the database to the media buyer's resource planning system.