Error 0x80045014

Value: -2147201004 | 0x80045014 | 2147766292

What does it mean ?

SPERR_ENGINE_BUSY  
In speech recognition, the current method can not be performed while a grammar rule is active.
Value: 20500 | 0x5014 | 0b0101000000010100

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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