Recover Default Theme for Web Dynpro Applications
The scope of this blog is to recover the theme for Web Dynpro Applications. A Web Dynpro application uses theme of the logged in portal user. And it is also possible to configure the Web Dynpro application runtime to use the defined Web Dynpro theme instead of the portal theme. But if the default configurations are not changed properly then none of the portal pages are accessible. This document provides a way to recover the original settings.
Read the source article at SAP Network Blog