Sage 300

I'm updating from Sage 300 ERP 2014 (300 Premium ERP) (Build 5) (Product Update 5) to Sage 300 ERP 2017 PU2. In data activation, I get the following error when I try to activate any modules: "Incorrect procedure. You cannot upgrade from a later tax…

I'm trying to assign Optional Fields that I created in Common Services to to the A/R Optional Fields Module. Every time I press Save, I get this message: Incorrect procedure. Cannot insert, update, or delete A/R Optional Fields until all other users…