Correcting a missed RTI submission

Hi - I have made a silly human error by completely forgetting to log an employee regular payment for October but not realising until after I had submitted the RTI for November. There seems to be no way of going back a month and correcting the mistake, and I have been unable to find any advice in the forums. The help page online here https://www.gov.uk/running-payroll/fps-after-payday shows almost every eventuality except this one. How can I correct this? Do I just log an additional payment in November to balance the year?

Hi Nick Crispin,

If you are using HMRC's Basic Payroll Software, you will need to do a rollback and enter the October payment, you can call our Online Services Helpdesk 0300 200 3600 for assistance with the rollback.
If you are using a third party software, you should call their heplline for advice on this. 

Thank you.