Hello MarikaH,
You will need to rollback the pay period to correct the month. You can do this by going to Payroll, and then finding your last payroll in the Payroll History list. After selecting the payroll, click the small bin icon to delete the payroll. You can then make any changes you need to the pension scheme and re-run the payroll. You will need to select 'correction' as the reason for last submission when resubmitting the FPS to overwrite the info HMRC have.
If you need any further advice on taxation methods, you will need to contact your pension provider.
Thanks,
Talia
