You can use the Data Class to customize the attributes of an existing data field in the DAC and to store the changes in the customization project as a DAC item. Because the goal of the customization of a field on the DAC level is to change the behavior or appearance of controls for the field on all forms, you start the customization of a data field from any form that contains a control for the field.
To customize a data field from a form that contains a control for the field, perform the following actions:
The Data Class editor shows the custom and original attributes of the field in the work area, and you can use the following objects:
If you customize a form by using the Screen Editor, you may need to change the attributes of a data field to change the appearance or behavior of an appropriate control on the form. If the control node is selected in the Control Tree, you can open the Data Class for the field immediately from the Screen Editor. To do this, perform the following actions:
If the DAC item for the data access class that contains the field declaration is absent in the customization project, the Acumatica Customization Platform creates an appropriate item and saves it in the database. Then the platform opens the item in the Data Class Editor, and you can customize the attributes of the field.