Error 0x8004002E

Value: -2147221458 | 0x8004002E | 2147745838

What does it mean ?

TAPI_E_INVALBUTTONSTATE  
Invalid button state.
Value: 46 | 0x002E | 0b0000000000101110

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

StackOverflow

Other Errors for FACILITY_ITF