Undeployment 
Use
You can use the undeployment function to remove installed applications from the SAP J2EE Engine.
Prerequisites
Your SAP J2EE Engine contains SDAs of applications that you can select to be undeployed.
You can only undeploy applications that do not have dependencies on other SDAs.
Activities
On the left screen, select the SDAs that you want to remove from the SAP J2EE Engine or file system, and choose Select SDA for Undeployment to move them to the window SDAs Selected for Undeployment.
The SDM checks for any dependencies that the selected SDAs have. If the SDM does not find any dependencies, it releases the SDA for undeployment.
Choose Start Undeployment.
The SDM removes the selected SDAs from the SAP J2EE Engine or file system.
See also:
For more background information, see Software Deployment Manager and Working with the Graphical User Interface (GUI).