Error 0x00042602

Value: 271874 | 0x00042602 | 271874

What does it mean ?

NOTESPH_S_IGNORE_ID  
The group or person was successfully ignored.
Value: 9730 | 0x2602 | 0b0010011000000010

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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Other Errors for FACILITY_ITF