Error 0x8051001B

Value: -2142175205 | 0x8051001B | 2152792091

What does it mean ?

OPC_E_DS_DUPLICATE_SIGNATURE_ORIGIN_RELATIONSHIP  
More than one relationship of the digital signature origin relationship type exists, but only one such relationship is allowed. For more information about this relationship type, see the OPC.
Value: 27 | 0x001B | 0b0000000000011011

Where does it come from ?

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

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