Error 0x8051000D

Value: -2142175219 | 0x8051000D | 2152792077

What does it mean ?

OPC_E_DUPLICATE_OVERRIDE_PART  
More than one Override element in the Content Types stream specifies the same part name as the value of its PartName attribute. If this error is encountered while a package is being read, the package is not valid, because the PartName attribute value for each Override element must be unique. For more information about Override elements, see the OPC.
Value: 13 | 0x000D | 0b0000000000001101

Where does it come from ?

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

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