This error occurs if any of your employees have:

• Turned 21 (or older) but their NI category is still showing as M (under 21) or Z (under 21 with deferment).
• Turned 25 (or older) but their NI category is still showing as H (apprentices under 25).

Our software validates NI categories and flags this message when the employee’s age no longer matches their NI category. The system does not automatically change the NI category, you must manually review and update it.

To correct the NI category for employees who are no longer eligible for M, Z, or H, assign the appropriate NI category based on HMRC guidance.

Road Map- Editing the NI categories:
Employee -> View/Edit employee details -> View/Edit -> NI category details -> Select NI -> Save (‘Employee’ is the button positioned in the tasking zone menu at the top. It is the second button from the left)