Abstract
Enterprise resource planning (ERP) systems cannot remain static after their implementation, they need maintenance. ERP maintenance is a key process required by the rapidly changing business environment and the usual software maintenance needs. However, these projects are highly complex and risky. So, the risks management associated with ERP maintenance projects is crucial to attain a satisfactory performance. Unfortunately, ERP maintenance risks have not been studied in depth. For this reason, this paper presents a general risks taxonomy. It gathers together the risks affecting the performance of ERP maintenance. Moreover, the authors use the analytic hierarchy process (AHP) methodology to analyze the risks factors identified. It helps managers, vendors, consultants, auditors, users and IT staff to manage ERP maintenance better. Results suggest that the most critical stage in ERP maintenance is the first phase, which receives, identifies, classifies and ranks the software modification. The most important hazards in ERP maintenance are the cooperation and commitment of ERP users and managers.
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