This is to inform you that please follow the below steps to amend the already submitted FPS:
1. Download HMRC Response for the submission already made to HMRC.
2. Delete the Payroll (refer attached).
3. Input the correct payroll details.
4. Re-run the Payroll with correct info by selecting late reason (refer attached) and with the same Pay Date as you did earlier, and
5. Submit the FPS to HMRC again.