How to Recalculate Rollup Summary Fields in Salesforce

Steps to Force Recalculate a Rollup Summary Field

To correct incorrect Rollup Summary field values on individual records, you can force a mass recalculation directly from the field definition in Setup. This process triggers Salesforce to recompute the field values across all affected records.

1. Go to Setup | Object Manager | Affected Object | Fields and Relationships | Affected Rollup Summary Field
2. Click Edit
3. Under "Roll-Up Summary Options" select Force a mass recalculation of this field
4. Then click Save.

This allows all your records to have correctly calculated information.

You can then edit the Roll-Up Summary and return it to its previous setting.

If you’re still having issues after forcing a mass recalculation on the field, contact Salesforce Support for further assistance.