2. Evaluating ERP Vendors: Not properly vetting ERP vendors will become an expensive affair for the companies as ERP vendors provide the solution which will be in sync with the system functionality. One of the most commonly made mistakes is companies get attracted to the marketing promos and do not do a background check on the vendors. When the time arrives for the implementation, companies face system functionality restrictions, lack of features, lack of flexibility in the ERP software. It is best advised to have references regarding vendors. Shawn Casemore, president, Casemore & Co., which helps clients improve their operational performance says "Always ask for references. Request the names of at least three companies "who are in your business sector, who you can contact and discuss the software with, then call and discuss features, functionality, and challenges," he says. If the vendor can't (or won't) provide at least three names? "Walk away," unless you want to be a guinea pig.