The holder of the customs warehousing authorisation notifies Customs afterwards of all the electronically submitted customs warehousing declarations where the declared goods in the customs warehouse have been e.g. placed under the subsequent customs procedure or re-exported. When you have logged in to the service, you can discharge one or several declarations at the same time.
A discharge notification doesn’t discharge the customs warehousing procedure. Instead, it is an informative listing of one or more customs warehousing declarations.