Setting a field mandatory in fusion application

Requirment: We need to enable the field Tax Regime code. 
 

Step-1 : Create a sandbox and activate a sandbox.

Navigate to page and click on Customize pages.

 Click on source, It will display the source code, at the bottom.
 

Select the field that we need to change the properties it will pop a dialog box click Edit

 

It will point to the field in source.

 

Click on edit icon

 

Enable the property show required. Click on apply.

Check the field 

 

 

 

If we are Ok with the customization we can deploy the sandbox.