Or do you want to write your own MDM-WebDynpro iView and want to use the existing ItemDetails iView within this WebDynpro?
If so you should read this weblog.
The referred article will show you how to integrate the SAP MDM 5.5 Business Package- iView functionality into a SAP WebDynpro. With SAP MDM 5.5 SP4 there is a very good possibility to position the ItemDetails IView on a WebDynpro View via the iFrames-UI element. The result is that you have the capacity to use existing and configurable iView within your self-programmed WebDynpro application. This procedure will save you a lot of costs and time during the implementation phase. The integration of the HTMLB-based IView and the WebDynpro based outer-View is transparent and the user will feel like it is only one application.
Please open this article: Integrating MDM Item-Details-iView into a WebDynpro Application