In the 1990s and 2000s there was considerable growth in implementation of Enterprise Resource Planning(ERP) Systems.  It is estimated that the ERP market will grow to about $65 billion by 2009. Companies expect these systems to support many of the day to day business transactions.  However, the implementation projects of ERP are big, strategic and complex projects which involve lots of time, scope and costs.  Because of that, companies have to create conditions, in which they can implement chosen solution in expected time, scope and budgeted costs.  This means that companies should be aware of what most critical factors for success of ERP implementations are.  This study will first investigate the ERP implementation CSFs by studying prior published researches on the field of ERP implementation.  Then, this study will discuss in depth some important factors of ERP implementation and represent preliminary results CSFs of ERP implementation empirical survey.

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