Hi there, @finance143.
Thanks for visiting the Community today. I'm here to help you get past this issue.
We can check the pensionable items to see if there may be some payroll items not included in the calculation. It could be why the calculations are incorrect.
I'm sharing with you these handy articles to help manage Pensionsync integration:
Keep in touch if you need additional information by commenting below. I'm always delighted to help.