Error 0x8051004B

Value: -2142175157 | 0x8051004B | 2152792139

What does it mean ?

OPC_E_MC_INCONSISTENT_PRESERVE_ATTRIBUTES  
The PreserveAttributes attribute does not have a matching Ignorable attribute on the same element.
Value: 75 | 0x004B | 0b0000000001001011

Where does it come from ?

FACILITY_OPC  
Open Connectivity Service (Package Consumption)
Value: 81 | 0x051 | 0b01010001

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