Post-ERP feral system taxonomy: A manifestation from multiple case studies

The implementation of ERP usually assumed to eliminate department and user based information systems. However, users seek out alternative when they are uncomfortable with prescribed ERP protocol. Through user's innovation and creativity, they create their own information system or workaround the system to facilitate their work, thus evolve a phenomenon known as 'feral systems'. The previous literature has recognised the impact of feral systems but has not provided a comprehensive framework for classifying the different manifestations and types of feral systems. This paper proposes a feral system classification taxonomy. The taxonomy is developed through case studies of three organisations- two from an oil and gas sector and the third from automotive components manufacturing. The findings indicate feral systems differ in terms of who authorises them what they are and why they exist. Feral system taxonomy is classified into six different type. This study offers an in-depth exploration of the manifestations and development of feral system taxonomy. As such the study will contribute on how organisations can identify feral system in order to highlight the impact it brings to the organization and how to better manage feral system.