To be honest, I do think it is the incompetency of Turkish Federation considering the fact that there's no detailed explanation of what kind of problem they had with the papers. Probably Chinese federation or FIVB had the chance to overlook this issue and let her play but you can't blame anyone for not helping you get away with something. Most likely it was an unnecessary bureaucratic paper but rules are rules. They should have double check everything and be sure that every paper was in place on time.
Of course it also shows incompetency of FIVB as well since they didn't catch this beforehand. Good that someone pointed it out before this tournament instead of real OG