Minimum time to retake exam

Hello,

I've been preparing for the CWNA exam and wondering if you fail the exam, is there a minimum time you have to wait before you retake. I am just trying to get my CWNA by a certain date and want to take into consideration that I may fail.

I checked around on CWNP's website but didn't see anything. I'm sure it's there but my blind eyes couldn't seem to find it.

Thanks!