Change coding rate to 4/6

Hi, I’m new to LoraWan, I have a question, during end device connections, an error occurred that the coding rate is 4/6. After reading about the error, I learned that chirpstack works according to the standard on 4/5. I flashed the device and everything worked, but I am interested in the possibility to change the coding rate to 4/6?

You would need to change the source-code and recompile ChirpStack. The coding-rate is specified per region / per data-rate. E.g.:

Thank you very much for your help