Error 0x8031006D

Value: -2144272275 | 0x8031006D | 2150695021

What does it mean ?

FVE_E_OS_VOLUME_PASSPHRASE_NOT_ALLOWED  
A password cannot be added to the operating system drive.
Value: 109 | 0x006D | 0b0000000001101101

Where does it come from ?

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

Other Errors for FACILITY_FVE