Launch the WebSphere Application Server Administrative Console.
On the Administrative Console Main screen:
In the left-hand navigation, expand Applications.
Click WebSphere enterprise applications.
Select the option next to PrimaveraApi.
Click Uninstall.
In the message or in the task menu, click Save .
On the Save to Master Configuration screen, click Save.
If you will use the same apihome directory for the new deployment, delete the existing WAR file from that directory to avoid conflict with the new PrimaveraAPI.war file.