Hello, I have a significant problem. I don't understand why one pin of my design is not connected. It's an input, and the simulation produced the correct result with this input pin. Do you know where the problem might be? There are no warnings about this pin in the log files.

Try looking in the final DEF file and see if it is connected to anything and/or has any routing shapes

I think the problem is in the synthesis. but I don't know how to resolve it

@Charly Meyer Is it possible that the pin is irrelevant? For example, the input to a 2 nand gate where the other signal will always be low?