You are in the UI Designer, and you cannot see the MessageMapping folder in the Controller facet.
Reproducing the Issue
- Log in to the SDK.
- Open the UI Designer.
- Open the Controller facet.
- If you cannot see the Messages folder, attempt to select it from the navigation bar.
- If you cannot add it from the navigation bar, then it is not possible to have this feature for this screen.
The Message Mapping feature will only be an available feature for screens where the 'UseUIController' property is set to true. If it is set to false, then the Messages folder will not be visible.
You will need to check the 'UseUIController' property, in the Properties facet in the UI Designer, to determine whether you can use the MessageMapping feature or not for this screen.
KBA , AP-RC-BDS , ByDesign Studio , How To