Enterprise Resource
Planning (ERP) are enterprise-wide systems that automate all of a company’s
business processes enable to share information and communication with each
other. Although there are lots of benefits of ERP, construction industry is far
behind the ERP implementation. There are so many reasons for this low- level
adaptation. The objective of this research is to give guidance to medium size
enterprises for a successful implementation via complexity index built upon four basic parameters
Product, People, Project and Business processes. A critical
literature review was carried out to identify the key contributing factors for
successful implementation. Subsequently a questionnaire survey and
semi-structured interviews were carried out with selected ERP consultants,
users, and employees. The findings revealed that key contributing factors for
successful ERP systems are Product, People, Project, and Company business
processes dimensions. Further, it is concluded that there is a strong positive
correlation between these variables. Development of Complexity Index was
carried out by using the ERPs in the current industry, and they are ranked
according to the "Panorama ranking reports-2017". Complexity analysis revealed that for small
to medium size enterprises (SMEs) it is better to use low ranking ERPs rather
than high-ranking ERPs.