Why am I receiving this error message 

You have provided information about payment of employer’s additional national insurance contributions after 01.01.2025. Employer’s additional national insurance contributions is terminated effective from 01.01.2025.  

You may have received the error message because you have: 

•  specified the wrong period for the a-melding 
• stated wrong information about refunds from NAV for advanced sickness benefits for 2022-2023  
• Used a wrong calculation code for the employer’s national insurance contributions 

Do I have to correct the error 

Yes, the a-melding contains serious errors and/or omissions which you must correct. The a-melding has been rejected. 

You must correct the error by the deadline for submitting the a-melding for the calendar month in which you received the error message. 

Severity: Rejection 

See the overview of error severities 

How to correct the error  

1. Remove information about the calculation code employer’s national insurance contributions, or change the period that the a-melding concerns.  
2. Submit the a-melding when you have corrected the error. If you use a payroll system, check with your system supplier if you are not sure how to make corrections in your system.