Is this minor or major, and will TPL be allowed to correct?

When I read TPL statements it seems to be fact that they goofed on the original PIC list and they are now trying get agreemnent to allow corrections:

"7. Shortly after serving the Original PICs, I learned that the list of representative chips in the text did not accurately list the chips for which claim charts were provided; and also that, unlike TPL's accusations in the June 28 letter, inadvertently failed to expressly accuse the chip families for which the accused representative chips were representative."