Error 0x800721B2

Value: -2147016270 | 0x800721B2 | 2147951026

What does it mean ?

ERROR_DS_INVALID_SEARCH_FLAG_SUBTREE  
The search flags for the attribute are invalid. The subtree index bit is valid only on single valued attributes.
Value: 8626 | 0x21B2 | 0b0010000110110010

Where does it come from ?

FACILITY_WIN32  
Provides a way to handle error codes from functions in the Win32 API as an HRESULT. (Error codes in 16 - bit OLE that duplicated Win32 error codes have also been changed to FACILITY_WIN32)
Value: 7 | 0x007 | 0b00000111

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