With the release of Business Central 2020 Wave 1 lot of new features has been added to make product more prominent.
Today we will see how to create enum in business central and use in table.
Step 1 :- Create enum as follow

Extensible :- If it is set to true then enum can be extended.
Step 2 :- How to use in table

As far as business central lot of enum has been added for options field.
How to extend enum in business central
Difference between enum and options
Hope this will help you..