Error 0x8031009F

Value: -2144272225 | 0x8031009F | 2150695071

What does it mean ?

FVE_E_INVALID_NKP_CERT  
An invalid certificate has been found in the Network Key Protector certificate store.
Value: 159 | 0x009F | 0b0000000010011111

Where does it come from ?

FACILITY_FVE  
Full volume encryption
Value: 49 | 0x031 | 0b00110001

Other Errors for FACILITY_FVE