HMRC only accept one electronic P11D submission for each PAYE reference from your software.
This means you can't re-submit a P11D submisson from your software if your initial submission contains any incorrect processing.
NOTE: If you need to amend 2021/2022 or before, follow the amend a P11D submission for the 2021/2022 tax year and before article.
Before you can send HMRC any amendments, you need to correct your employees' benefits correctly in Sage 50 P11D:
NOTE: Taking a backup now is useful if you ever need to refer back to the values you submitted initially.You've corrected your P11D software and printed forms that include the changes. Next, enter the information from the corrected forms into HMRC's online form.
Go to Gov.UK to find out more and access HMRCs form.