To "undo" a mistaken import, the administrator must delete the incorrectly created records. Two standard tools facilitate this:
* Mass Delete Records (Option D):This is a browser-based tool in Setup that allows administrators to delete up to 250 records at a time (standard) or use criteria to identify and remove larger sets of records.
It is the quickest way for smaller mistakes.
* Data Loader (Option B): For large-scale errors, the administrator can use the Success file generated during the original import (which contains the new record IDs) and perform a "Delete" operation.
The Data Import Wizard (Option C) is for adding or updating data, but it does not have a "Delete" function.
Weekly Data Export (Option A) is a backup tool and cannot be used to remove existing data from the system.