Error 0x0004507F

Value: 282751 | 0x0004507F | 282751

What does it mean ?

S_LIMIT_REACHED  
The word being normalized has generated more than the maximum number of allowed normalized results indicates that returned list is not exhaustive, but contains as many alternatives as the engine is willing to provide.
Value: 20607 | 0x507F | 0b0101000001111111

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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