V39 duplicate file number

V39 duplicate file number is a common lodgement error for the prior-year tax returns.

Usually, the prior-year tax return takes about 2 - 3 days to show on the tax agent portal. If they don't appear by then, you'll need to lodge the prior-year tax returns as an amendment by completing the amendment schedule so the tax return doesn't appear as a duplicate on the Australian Taxation Office (ATO) system.