Welding Tips and Tricks

I am robotically welding two weld seamed tubes together. One tube is end formed and the other tube is inserted over the end-formed tube. The weld is an "all around" weld and no start/stop point on the weld print is specified. My question is, am a required by AWS to start the weld and end the weld on the seam of the tube?

Thanks in advanced!

What code are you welding to?

Never heard anyone talk about where a weld can start or stop (doesn't mean it hasn't happened) but I would avoid starting on a seam. JMO