Enterprise Resource Planning (ERP) systems claim to meet the information needs of organizations. These off-the-shelf software packages replace hard to maintain solutions created by IS departments or older off-the-shelf packages that often provided only piecemeal solutions to an organization’s information needs. ERP systems evolved from material requirements planning systems (MRP) and manufacturing resources planning systems (MRP II). ERP serves the entire enterprise, not just manufacturing and inventory control as with its predecessors. ERP integrates information for the entire organization in a single database. But ERP implementations are often complex and experience serious problems. Failures, abandoned projects and general dissatisfaction have been well publicized in the business press. ERP systems are “expensive and difficult to implement, often imposing their own logic on a company’s strategy and existing culture” (Pozzebon, 2000).