Error 0x8004507D

Value: -2147200899 | 0x8004507D | 2147766397

What does it mean ?

SPERR_WORD_NEEDS_NORMALIZATION  
The word passed to the GetPronunciations interface needs normalizing first
Value: 20605 | 0x507D | 0b0101000001111101

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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