Backup Retention in Days defines how long the backups of your database will be saved.
Double-clicking Backup Retention in Days in the list will bring up the Global Setting card.
Field on the Global Setting Detail
The field is intended for entering the adjustment value. The value is numeric and represents the number of days for what the backups will be saved.
Clicking OK in the lower part of the Global Setting card will save changes and close the card. If you wish to close the Global Setting card without saving any changes, click Cancel.