Error 0x80310070

Value: -2144272272 | 0x80310070 | 2150695024

What does it mean ?

FVE_E_DV_NOT_SUPPORTED_ON_FS  
The selected discovery drive type is incompatible with the file system on the drive. BitLocker To Go discovery drives must be created on FAT formatted drives.
Value: 112 | 0x0070 | 0b0000000001110000

Where does it come from ?

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

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