Module reserved size
An integer that describes how many places on the module are not available for real students as they arrive. You can reserve spaces to accommodate students who might arrive after the academic year begins.
Increasing the number of reserved spaces does not increase the overall size of the module. Instead, it reduces the number of available spaces on the module.
It is possible to end up with a negative number of spaces. The Enterprise Course Planner dashboard indicates this mismatch between supply and demand.