In the process of PCB design, a correct schematic is an essential precondition for PCB fabricationso that the schematic must be guaranteed before generating rhe netlist into the PCB.

Checking the Schematic: After drawing the schematic, you can use some common troubleshooting methods to avoid certain low-level errors (EDA softwares have such functions, but you need to set it up manually).

Besides, EDA softwares are also able to check whether the schematic and PCB are synchronized, the schematic and PCB network are consistent or not. (Design/Update Schematics.)