Error 0x8004537F

Value: -2147200129 | 0x8004537F | 2147767167

What does it mean ?

FSRM_E_PATH_NOT_IN_NAMESPACE  
The path is not included in a classification rule.
Value: 21375 | 0x537F | 0b0101001101111111

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

Other Errors for FACILITY_ITF