Error 0x80045033

Value: -2147200973 | 0x80045033 | 2147766323

What does it mean ?

SPERR_INVALID_FORMAT_STRING  
The XML format string for this RULEREF is invalid, e.g. not a GUID or REFCLSID.
Value: 20531 | 0x5033 | 0b0101000000110011

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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