Contradiction with 1 Chronicles 18:8
Contradiction in the source of the brass used in building, where 1 Kings 7:34 describes the making of the bases for the ten lavers, and 1 Chronicles focuses on the brass David took from cities.
1 Chronicles 18:8: Likewise from Tibhath, and from Chun, cities of Hadarezer, brought David very much brass, wherewith Solomon made the brasen sea, and the pillars, and the vessels of brass. [Tibhath...: called in the book of Samuel Betah, and Berothai]
Contradiction with Exodus 20:4
Contradiction in the prohibition of making graven images versus the detailed craftsmanship of artistic work described in 1 Kings 7:34.
Exodus 20:4: Thou shalt not make unto thee any graven image, or any likeness [of any thing] that [is] in heaven above, or that [is] in the earth beneath, or that [is] in the water under the earth: