Submit a written request for correction
Specify why the registration details need to be corrected.
If the correction also concerns some other party (for example, the previous owner or holder of the vehicle), both of you must sign the request. If this is not possible, you can both sent your own requests, but you must agree on the information that needs to be corrected. For example, if you disagree about the date of the transfer, the correction cannot be made.
The transfer date must correspond to reality. For example, attempting to avoid the Finnish Motor Insurer’s Centre’s penalty fee for not taking out insurance is not a valid reason for correcting the vehicle’s transfer date.