If you make changes to payroll figures after an initial FPS was submitted, you will need to send an Additional FPS reflecting these changes.
Finalize the current payslips, and then create an additional FPS for the modified periods. Verify the year-to-date figures before sending the Additional FPS to HMRC.
To create an additional FPS, please go to the RTI tab and select the option for Additional FPS.
You can then select the employee which you wish to submit the additional FPS for and click ok. Once you have this done, you can then send this as normal.