Error 0x8031004D

Value: -2144272307 | 0x8031004D | 2150694989

What does it mean ?

FVE_E_DRY_RUN_FAILED  
The BitLocker encryption key cannot be obtained. Verify that the Trusted Platform Module (TPM) is enabled and ownership has been taken. If this computer does not have a TPM, verify that the USB drive is inserted and available.
Value: 77 | 0x004D | 0b0000000001001101

Where does it come from ?

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

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