Error 0x8004730A

Value: -2147192054 | 0x8004730A | 2147775242

What does it mean ?

IFED_E_REGISTER_IMPROPER_WORD  
Microsoft IME user dictionary: improper word is to be registered
Value: 29450 | 0x730A | 0b0111001100001010

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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