Delete individual registrations
Go to Data management > Data sources and open a data source.
Find a registration you want to delete and click on its ID (the very left column).
Click Delete in the bottom-left corner and confirm the action.
Delete all registrations at once
It is possible to delete all data from a data source at once. You can use it to refresh your data sources while keeping the data source structure.
Go to Data management > Data sources and open your data source settings.
Find the Delete button and click the little arrow to open more deletion options.
Select Delete all registrations and confirm the action.