Employee National Insurance arrears remain at end of tax year

What causes this issue?

Employee National Insurance Contributions (NICs) arrears remain at the
end of the current tax year. If these NIC arrears originated in the
current tax year, they can still be re-claimed from the employee in the
next tax year.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.