Final answer:
The error message indicates a duplicate device listing in simulation software commands. Correcting this requires ensuring unique identifiers for each device in the .dc and .step directives.
Step-by-step explanation:
The error message error(opsim-15051) indicates a configuration issue that occurs within a circuit simulation software when a device is mentioned more than once in the directives for DC analysis (.dc) or parametric sweeps (.step commands). This type of error is often encountered in simulation environments like SPICE, where each element in the circuit needs to be uniquely defined for the simulator to correctly perform analyses.
To resolve this error, you should check your circuit's netlist and ensure that each device is only listed once in the .dc and .step directives. Look for any duplicate entries of the same device within these commands and correct them by either removing the duplicates or ensuring that different instances of the device have unique identifiers. This will allow the simulation to run without configuration conflicts.