Error 0x80042815

Value: -2147211243 | 0x80042815 | 2147756053

What does it mean ?

VDS_E_VOLUME_SHRINK_FVE  
The volume could not be shrunk because it is encrypted by BitLocker and Fveapi.dll could not be loaded to determine its status. For this operation to succeed, Fveapi.dll must be available in %SystemRoot%\System32\.
Value: 10261 | 0x2815 | 0b0010100000010101

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

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