Contradiction with 2 Samuel 23:9
The verse lists Eleazar as one of the three mighty warriors with David, which could suggest a different historical context or detail compared to the military divisions of 1 Chronicles 27:4.
2 Samuel 23:9: And after him [was] Eleazar the son of Dodo the Ahohite, [one] of the three mighty men with David, when they defied the Philistines [that] were there gathered together to battle, and the men of Israel were gone away: