Kindly follow the below mentioned steps to resolve the issue-
> Make sure to use the central fingerprint parts evenly when you register or scan fingerprint, so that all portions of fingerprint, including the center and corners have been fully scanned.
> If problem does not get resolved, run the device in Safe mode and reconfigure the fingerprint.
> If issue still persists, create data backup and reset the device.
For further assistance, register your concern in Samsung members app (Open Samsung members app>click on “+“icon>send feedback>Error report/ Ask Questions).
Team Samsung Members