I tried to call PZ31_EWT in portal by creating SAP transaction iview and IAC iview. In IAC, the transaction is opening as java applet which in turn requires JRE / JDK to be installed on each user's system. In SAP transaction iview, when opened in webgui format, the screen is appearing properly but the proficiency drop down is not working the way it should. When clicked on drop down, it is getting wrapped up. Its not allowing to select proficieny.
Also, in ITS server, we are not able to find out html file related to pz31_ewt and pz32.