Factual error: Haroun swings on a rope to knock Sheherazade's buyer off his horse and uses it for both to escape the slave market. Only thing is: the entrance to the market place is higher up than the auction platform, so the swing should have ended right in the steps, not on the higher ground.
Continuity mistake: During the final battle scene, there are two shots showing a kicking horse lying on the ground, with one of Haroun al Rashid's soldiers (dead, most likely) pinning it down at its neck. In the first shot, one of Kamar's soldiers lies in front of its flailing hooves, but in the next shot, an al Rashid warrior drives a Kamar soldier backwards, tripping him across the lying horse - and the Kamar warrior from the first shot is gone. My guess is that the cuts were originally in reversed order but re-arranged for the scene.