Error 0x80045091

Value: -2147200879 | 0x80045091 | 2147766417

What does it mean ?

SPERR_SISR_ATTRIBUTES_NOT_ALLOWED  
Attributes are not allowed at the top level.
Value: 20625 | 0x5091 | 0b0101000010010001

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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