UK payroll legislative changes 2025/2026 errors after patch applied in Production environment

Summary:

We successfully tested the 2025/2026 UK payroll legislative changes in our non-prod environment.

The patch has also now been applied to our Production environment and we have found calculation errors in our April checks for a number of items. We have opened Service Requests for Oracle to investigate. Has anyone else encountered this issues post Production patch being applied?

Content (please ensure you mask any confidential information):

Calculation errors found:

Statutory Maternity Pay still calculating at previous rate instead of new rate.

NI Saving still calculating at 13.8% instead of 15%.

Payrolling of Benefits/ Cars with approved CO2 emissions figure still calculating at 2% instead of 3%