Error 0x00045018

Value: 282648 | 0x00045018 | 282648

What does it mean ?

SP_ALREADY_IN_LEX  
The word, pronunciation, or POS pair being added is already in lexicon.
Value: 20504 | 0x5018 | 0b0101000000011000

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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