Error 0x8004004A

Value: -2147221430 | 0x8004004A | 2147745866

What does it mean ?

TAPI_E_CALLCENTER_INVALPASSWORD  
Invalid agent password.
Value: 74 | 0x004A | 0b0000000001001010

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

Other Errors for FACILITY_ITF