These are the common mistakes that companies make when implementing an MRP/ERP system. They often relate to allocating the implementation to the wrong department, often mistaking it for either a finance or I.T. only project. Sometimes the wrong stakeholders are excluded from the project, with the company mistakenly thinking that 'too many cooks' will slow the project down. Also, it's important to understand and agree WHY the company needs the system, ensuring that all stakeholders see the targeted benefits.
