Error 0x80510049

Value: -2142175159 | 0x80510049 | 2152792137

What does it mean ?

OPC_E_MC_MULTIPLE_FALLBACK_ELEMENTS  
There is more than one Fallback element within the child elements of an AlternateContent, but only one is allowed.
Value: 73 | 0x0049 | 0b0000000001001001

Where does it come from ?

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

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