Defining ERP requirements is important for an ERP system. Requirement mapping starts with taking a close look at your business, how it performs and what is right with your business. Basically, it consists of identifying what you're not satisfied with. In short, ERP mapping is required to improve, mapping out the processes as they now exist and looking at how you can change them with ERP to make them function more efficiently. Read more at: http://it.toolbox.com/blogs/inside-erp/mapping-requirements-for-erp-70310