In the case where you have mistakenly lodged the current financial year STP employee YTD values to the ATO instead of the previous financial year, there is no further action to be taken.
There will be no impact or blockers to lodge the previous financial year, so please proceed to lodge that if you need to complete the EOFY STP lodgment.
Furthermore, once you process and lodge the first pay run for the current year, it will automatically replace the EOFY event that was incorrectly lodged for the current year and update with the new YTD values to the ATO.
Note: When it comes time to lodge the current year, you would select relodge.