Error 0x8051001F

Value: -2142175201 | 0x8051001F | 2152792095

What does it mean ?

OPC_E_DS_MISSING_SIGNATURE_ORIGIN_PART  
A relationship of type digital signature origin was found, but the Digital Signature Origin part itself was not. For more information about this relationship type, see the OPC.
Value: 31 | 0x001F | 0b0000000000011111

Where does it come from ?

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

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