Sovereign immunity, or crown immunity, is a legal doctrine by which the sovereign or state cannot commit a legal wrong and is immune from civil suit or criminal prosecution.
My understanding in the state of Florida, sovereign immunity prevents state government employees from being sued personally and only the state can be sued. It also caps the suit to less than $100,000 unless the legislature appropriates more funds for the case. (For example, someone incarcerated wrongfully for 10 years.)
Disclaimer, I am not a lawyer.