Duplicate records from repeated spreadsheet imports can compromise Salesforce data integrity. You need robust duplicate detection and prevention systems that work automatically during bulk operations.
This guide shows you how to implement UPSERT operations and External ID fields for reliable duplicate prevention and data synchronization.
UPSERT operations prevent duplicates automatically using Coefficient
Coefficient provides robust duplicate detection through UPSERT functionality and External ID field support. This approach offers superior duplicate handling compared to basic insert operations by updating existing records when matches are found or creating new records when no match exists.
How to make it work
Step 1. Configure External ID fields for duplicate matching.
Set up External ID fields on your Salesforce objects before bulk operations. Use UPSERT operations that update existing records when a match is found or create new records when no match exists. This eliminates the risk of creating duplicate records from repeated spreadsheet imports or overlapping data sets while preserving existing relationships.
Step 2. Implement advanced duplicate handling strategies.
For Contact records, use email as an External ID to prevent duplicate contacts with the same email address. Create External ID fields with business-meaningful values like customer numbers or product codes for reliable duplicate detection across systems. Use spreadsheet formulas to create composite keys like =A2&”-“&B2 combining multiple identifying fields when single External IDs aren’t sufficient.
Step 3. Monitor duplicate handling results.
Coefficient’s results tracking shows whether each row resulted in an INSERT (new record) or UPDATE (existing record modified). When duplicate detection rules fire, the system provides clear error messages indicating why the operation failed and what needs to be corrected. This visibility helps you understand and manage your duplicate prevention strategy.
Step 4. Apply best practices for ongoing synchronization.
Always use UPSERT instead of INSERT for bulk operations when there’s any possibility of duplicate data. Establish External ID fields before bulk operations rather than trying to retrofit them. Use Coefficient’s preview feature to identify potential duplicates before processing. This systematic approach makes the tool ideal for ongoing data synchronization scenarios.
Maintain data integrity automatically
Systematic duplicate detection makes Coefficient ideal for ongoing data synchronization scenarios where maintaining data integrity is critical. Start using Coefficient for reliable duplicate prevention.