The increasing software complexity of wireless devices and wireless data service provisioning motivates a wireless terminal management challenge. The systems management solution for this problem needs to scale up to large device populations, while being lightweight enough to be pragmatic for resourceconstrained devices. The work in this paper builds upon the emerging SyncML standard for wireless terminal management in order to bring sophisticated policy-based management to large populations of wireless data devices. It is anticipated that this technology will simplify the upgrade and management of wireless data devices substantially, thus encouraging the adoption of sophisticated data terminals.