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In a recent aricle in an MIT Sloan Management Review, the article's author , Cynthia Rettig, describes ERP systems as made up of " massive programs , with millions of lines of code, thousands of installation options and countless interrelated pieces." These systems " introduced new levels of complexity , often without eliminating the older systems (known as 'legacy' systems) they were designed to replace.

ERP implementations are so complicated and expensive , Rettig points out, that simply completing one is seen as a success without any corroborating gains.

courtesy, ITBusinessEDGE.com.