The QuickBooks Online (QBO) "Duplicate Name" error usually appears when a customer shares the same name as a vendor, contractor, or salesperson in QuickBooks. QuickBooks doesn't allow the same name across those record types, so the sync fails. To fix it, map the Floorzap customer to the matching QuickBooks customer so both point to the same record. (A slash character in a product name can cause the same error — see the section at the end.)
Navigate to Settings.
Proceed to Integrations.
Select QuickBooks.
Click on Map My Customer.
Search for the customer causing the error.
Continue your search here if needed.
Make sure you've located both matching customer records.
Confirm that both customers match.
Once you've matched both customers, click Save.
That's it — the customers are now mapped and the invoice will sync to QuickBooks without the Duplicate Name error.
Another Cause: Slash Characters in Product Names
If you're seeing the Duplicate Name error but there's no obvious name collision between customers, vendors, or contractors, check whether any product name involved in the sync contains a slash character (/). QuickBooks treats slashes in names as a hierarchy separator, which can trigger a false duplicate name conflict even when no actual duplicate exists.
Workaround: Remove the slash(es) from the product name in Floorzap, then resync the invoice.