Is certification required of zwave while testing custom command class

Hi there,
I am starting with zm5202 module from sigma designs for my project, and using sdk provided by sigma designs for developing different application. And tested successfully all my command class type with the gateway setup provided by sigma designs. Later on I shifted gateway setup on openhab, their I am facing certification issue while adding custom command classes in testing phase. Do I need certification in testing phase of command classes(custom) here in Home Assistant.