Error 0x80045020

Value: -2147200992 | 0x80045020 | 2147766304

What does it mean ?

SPERR_DUPLICATE_RULE_NAME  
A rule name was duplicated.
Value: 20512 | 0x5020 | 0b0101000000100000

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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