Use the "update code and title across schedules" option in case the asset code and/or description have been changed since when the asset's had been scheduled, this function will allow to update the schedule with the new code and description. Once performed, a report will appear indicating the updated schedules and fields.
NB: Please note that in case the "automatically update code and title on schedules" option is enabled in Etere Configuration > Settings > Basic > Media Library, the code and title will be automatically updated when the asset is saved across all future (not already aired) asset performances to reflect the changes.