I need documentation on how to develop an additional portlet different to the ones already in PPM. It's about creating a portlet in Java with Java portlet/ portal portlet or similar.
Until now I have done it without help but I am not able to call it from PPM and show the content of the new portlet. In the Java testing environment the portlet works ok but when I call it form PPM it only shw the header but it does not execute.
Portlet has to perform insert and update operations in the PPM tables and Workbench portlets do not help here.
Any idea where can I found info on how to develop a new portlet for PPM?