Error 0x8004004E

Value: -2147221426 | 0x8004004E | 2147745870

What does it mean ?

The peer for one of these bridge terminals has already been assigned.
Value: 78 | 0x004E | 0b0000000001001110

Where does it come from ?

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