If you send your P11D submission then find there's an error to correct, you can't send this correction to HMRC using your software.
This is because HMRC only accept one electronic P11D submission per PAYE reference.
NOTE: If you need to amend 2022/2023 or after, follow the how do I amend P11D or P11D(b) submission article instead.
Your first step is to make any corrections required to your employees benefits in Sage 50 P11D. After this, print the P11D or P11D(b) forms as required and post these to HMRC.
NOTE: This is useful if you need to refer back to the values you submitted initially for any reason.For further advice on what information to send HMRC and where to send the corrected forms, go to GOV.UK.