Every time you edit a case, lock the case. Before editing a case, verify that it is unlocked. After editing a case and saving your changes, make sure to unlock the case.
Purpose:
Prerequisite:
You must be the case owner, one of the case owners, or a member of the case's owner group(s).
To lock a case:
On the resource navigator, right-click the case resource and select Lock Case.
Or
Locking the case enables fields for editing and prevents case co-owners from editing and overwriting your changes. When you are done with changes, unlock the case to make the it available to co-owners.
To unlock a case:
On the resource navigator, right-click the case resource and select Unlock Case.
Or
To view who locked the case:
Display the Case Editor of the locked case. At the bottom of the panel, the Locked by
field next to the check mark displays the user name.