Fang Zei said:
Minor inconsistincies can be explained/retconned away by Chee and Hidalgo, outright contradictions like Chewie being alive in an Episode VII set 40 years after RotJ cannot.
A minor inconsistency is Bossk not eating reptiles vs. Bossk eating reptiles or Leia building her own lightsaber prior to The Corellian Trilogy vs. never having built her own lightsaber by the time of The Corellian Trilogy -- the Sith starting off as a species that was conquered by exiled Dark Jedi vs. the Sith being an organization of fifty-some darksiders created by a rogue Jedi Master is not.