Error 0x80045019

Value: -2147200999 | 0x80045019 | 2147766297

What does it mean ?

SPERR_NOT_IN_LEX  
The word does not exist in the lexicon.
Value: 20505 | 0x5019 | 0b0101000000011001

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