Error 0x80510021

Value: -2142175199 | 0x80510021 | 2152792097

What does it mean ?

OPC_E_DS_INVALID_RELATIONSHIP_TRANSFORM_XML  
A Transform element that indicates the use of the relationships transform and the selection criteria for the transform does not conform to the schema specified in the OPC.
Value: 33 | 0x0021 | 0b0000000000100001

Where does it come from ?

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

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