If you see the error:

InvoiceAddRs statusCode=3120 statusSeverity=Error statusMessage=Object "12345678-123456789" specified in the request cannot be found. QuickBooks error message: Invalid argument. The specified record does not exist in the list, 

Please contact ServiceTrade support at support@servicetrade.com. ServiceTrade will need to clear and re-sync customer list on integration-production.

Updated January 22, 2019

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