Object Manager
Compress C/AL History
After a while the C/AL history can be very big. To compress these tables you can use the option Compress C/AL History in the Administration menu. Administration > Compress C/AL History.
Check the options you want to keep and press Compress to delete all records that do not comply with one of the options. You can also enter a Date Filter to only compress the C/AL History that is older than e.g. a couple of months. If you choose the option Clear BLOB References, all compiled versions of the objects in the history will be deleted. After this, you cannot restore an object or do a rollback.