The effects of team process on team performance in ERP implementation teams were investigated. Data collected from 103 companies in Taiwan that had completely or mostly implemented ERP systems were analyzed. We found positive effects of cohesiveness on team performance, which suggests the critical role of cohesiveness on determining ERP implementation team success. The significant direct and positive effects of problem-solving and compromising strategy on team performance partially conform to previous research (Montoya-Weiss, Massey, & Song, 2001). The results suggest that in order to deal effectively with different degrees of conflict situation, team members ought to learn various conflict management strategies.