Yes, you can.
The Find Duplicates module helps you identify duplicate records in the CRM. You can include closed records while doing a duplicate check in the module.
Follow these steps to include closed records for a duplicate check in Find Duplicates:
- Log in to your CRM account.
- Click the Main Menu.
- Go to Tools.
- Select Find Duplicates.
- Select a module and a field for the duplicate check.
- Enable the Check closed records also for duplicates checkbox.
- Click Search.