Additionally, the vendor may assume that certain types of organizational structures or departments exist. At a conceptual level, reorganizations are not particularly expensive. In practice they can be very expensive as they often disrupt the normal flow of business for days, weeks or months. If they are not present in the current organization, it is important to consider what the cost of establishing those functions would be, and to determine if the benefits of using the vendor’s product will be sufficient to recoup those expenses The vendor may be willing to make modifications to accommodate specific requirements, but these can be costly to acquire and maintain