Hi, I am very new to Umbraco (trying the platform), and I am trying to create another master template except for the main master template. For example :

• I have the master template that includes the header and the footer, some docTypes inherit from it
• and one of them, let call it DataEdition, is supposed to includes other docTypes that each one of them contains form. (let call them DataForm)
• when I try to set the master template for DataForm to be DataEdition (and add RenderBody() in the DataEdition template) it compiled with error:

InvalidOperationException: RenderBody invocation in '/Views/DataEdition.cshtml' is invalid. RenderBody can only be called from a layout page.

How can I implement the requirement above?