Error 0x80510031

Value: -2142175183 | 0x80510031 | 2152792113

What does it mean ?

OPC_E_DS_MULTIPLE_RELATIONSHIP_TRANSFORMS  
More than one relationships transform is specified for a Reference element, but only one relationships transform is allowed.
Value: 49 | 0x0031 | 0b0000000000110001

Where does it come from ?

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

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