Application uninstall options
By default, enterprise applications are uninstalled before a new enterprise application of the same name is installed.
Ignore Application Uninstall Errors
To ignore uninstallation errors on enterprise application deployment set the following value in your Jython file:
ignoreEntAppUninstallErrors = "true"
The default value is 'false', i.e. not to ignore uninstallation errors.
This MUST be set to 'true' for WebSphere Process server Jython files.