Contradiction with Joshua 11:13
It states that Israel did not burn any of the cities built on mounds, whereas Joshua 13:17 mentions cities being mentioned as part of the territory given to the Reubenites.
Joshua 11:13: But [as for] the cities that stood still in their strength, Israel burned none of them, save Hazor only; [that] did Joshua burn. [in their...: Heb. on their heap]
Contradiction with Joshua 12:9
Lists Jericho as the first city King Joshua defeated, while Joshua 13:17 does not specify any conquest of mentioned cities, suggesting they were already included in a distributed inheritance rather than being specifically conquered.
Joshua 12:9: The king of Jericho, one; the king of Ai, which [is] beside Bethel, one;