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Error guides

QuickBooks status 3100: name already in use

That name is already used in QuickBooks. Use the existing record or pick a new name.

Code
duplicate_name
HTTP status
409
Type
quickbooks
Safe to retry
No, change the request first

What it means

Customers, vendors, items and accounts share a name space per list. Another record already has this name.

API message: The name is already in use by another list element in this company file (3100).

How to fix it

Query for the existing record and use it, or choose a different name.

Every error response carries a guideUrl that points at this page and a requestId you can find in the request log.