The factors to consider when upgrading software include:
Compatibility with existing hardware and software: Make sure that the new software is compatible with your current hardware and software.
Cost: Consider the cost of the software upgrade, including any licensing fees and the cost of training.
Time and effort required: Consider the time and effort required to install and configure the new software, as well as the time and effort required to train users on the new software.
Benefits: Consider the benefits of the software upgrade, including any new features or functionality that it offers.
Risks: Consider the risks of upgrading the software, including the potential for data loss or disruption to business operations.
Therefore, the factor that does not belong in this list is “number of users.” While it is important to consider the number of users who will be using the software, it is not necessarily a factor to consider when deciding whether to upgrade the software.