You don't "have" to wait on a reply... but mine came back in around 30 days last year.Ok I'm new to stamp collecting,for SBS and SBR we are required to fill out the form or mail a request in ,so with that said do they (BATF) have to reply "yes or no" before you can trace a cross state line or do we just have to let them know? If you have to wait for response what is the average wait time?