Contradiction with 2 Samuel 8:14
States that David put garrisons throughout Edom, and all they of Edom became his servants, suggesting continued control over Edom, contrary to 1 Kings 22:47, which mentions no king in Edom at that time.
2 Samuel 8:14: And he put garrisons in Edom; throughout all Edom put he garrisons, and all they of Edom became David's servants. And the LORD preserved David whithersoever he went.
Contradiction with 2 Kings 8:20
Indicates that in the days of Jehoram, Edom revolted against Judah's rule and appointed a king of their own, contradicting the previous lack of a king in Edom in 1 Kings 22:47.
2 Kings 8:20: In his days Edom revolted from under the hand of Judah, and made a king over themselves.
Contradiction with Genesis 36:31
Lists the kings who reigned in Edom before there reigned any king over the children of Israel, suggesting an established monarchy which contrasts with 1 Kings 22:47's assertion of no king in Edom.
Genesis 36:31: And these [are] the kings that reigned in the land of Edom, before there reigned any king over the children of Israel.