Financial Settings / General Settings / Price Lists, Fees & Taxes / Price List Configuration / Selecting a price category is mandatory (if at least one exists)
This setting makes the selection of the pricing category mandatory in all forms. For example, in student’s form, if you try to save without having selected pricing category you will get a warning in a popup window as shown below.
Example as administrator
Setting -> Active
If you save without pricing category
Setting -> Inactive
You can save without having selected pricing category