I have recently started learning Altium designer. I created a simple schematic with a few components. I created the schematic symbols and also the PCB footprints.
In the diode component that I added into the library, the schematic symbol used pin designators 1 and 2 while the PCB footprint symbol used designators A and K. The A and K designators were put into the symbol by the footprint wizard that I used. This mismatch was not detected when I carried out the "Validate PCB project ... " command.
When I started the PCB layout I kept getting what seemed to be cryptic error message saying some pins were "unknown" The diode component was not showing any rats nest wires as well in the PCB layout window too.
I eventually found that the problem was the pin designator (not the pin name) was not matched between the schematic symbol and the PCB footprint for the diode component. Now my question is, is there a way to automatically detect this type of mistake in the future?