Add a field without rebuilding the backend
A customer asks for a cost centre on every order.
- Open the order entity in TAF Studio and add a field of the type you need.
- Add the field to the order screen in the screen designer. Screens are rendered from configuration, so no front-end release is needed.
- Add a conditional layout rule if the field should appear or be required only in some cases.
- Try it in Development, compare Development with QA, and promote the change as a reviewed release.
The field, its place on the screen and its layout rule, with no back-end code.
A check that depends on other data is a C# rule. Existing records and their migration are yours to assess.