selection phase
misunderstanding between a buyer and a customer
ERP system is not flexible enough under processes’ exceptional circumstances
special needs of a company are not defined
installation phase
a company’s project manager is not a full time PM
data transfers from old to new system is difficult
connecting an ERP system to other IT systems creates problems
ERP supplier is not committed enough to the ERP system implementation
usage phase
ERP system is not felt as helping the business
the system supplier does not develop the system in the future