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.. QuickBooks error QBWC1039 can also occur if a QuickBooks user attempts to add the same configuration file to the software twice. Many other factors can cause such an error to occur. This will be discussed in more detail later in this section. Please read this section carefully to better understand this error. Or, contact a QuickBooks support expert. Call +1-844-499-6700 to speak to a certified QuickBooks Pro Advisor with your questions. However, let us understand QuickBooks error QBWC1039 in detail.