Here comes the strange issue, I have parent module and child module. I wanted on click of "create" button on subpanel , opens FullForm page.
To do so, I have change the widget file name from SubpanelTopButtonQuickCreate to SubpanelTopCreateButton.
Its opens the Fullform , but when it saves , it gives Blank page and in URL action comes as SubpanelViewer although records gets save in database.
Here action should be DetailView and not SubpanelViewer.