CTO renewal papers (part 4 pre-dates parts 1,2 and 3)

Good morning, if there are CTO renewal where part 4 pre-dates parts 1,2 and 3 what does that mean for the CTO if it has since been renewed on a number of occasions since then? Would it make the CTO invalid? And does the answer change it the renewal that is the issue dates back to 2009? Not sure of the rules back then as CTO’s had only been around then since November 2008? Asking for a friend as he doesnt have an account on here.

There is no legal limit to the number of cto renewals that I know of(both as an AMHP and AHM)

Thank you. I think what is meant by this, is that if the incorrect renewal caused the cto to be invalid, does the fact that there have since been a number of cto renewals completed correctly since the mistake? I hope that makes sense.