Is the QBWC1039 error preventing your smooth QuickBooks work process? Or have you seen the error "Unique Owner ID/File ID required"? This often occurs when you try to connect an app to QuickBooks software.Is the QBWC1039 error preventing your smooth QuickBooks work process? Or have you seen the error "Unique Owner ID/File ID required"? This often occurs when you try to connect an app to QuickBooks software.Is the QBWC1039 error preventing your smooth QuickBooks work process? Or have you seen the error "Unique Owner ID/File ID required"? This often occurs when you try to connect an app to QuickBooks software.