why ? what do you need to change ? you should plan make changes on DTE, router part. ISP provides Frame relay and usually they do not let you plan with their equipment.
I would think that there would be Nothing wrong on FR switch. Your routers configs would be messed up so you can troubleshoot.
But I am not 100% sure of course.
If it's the one pre-configured, then you will not have access to it. You should be able to glean everything you need from show/debug commands on the client-side of things.
If it's the one that YOU may be asked to configure, then absolutely.