After installation of the EntireX Adapter, the AS/400 connection type is not visible and not usable. To access the AS/400 system you need the IBM ToolBox for Java (JTOpen).
To download and install the IBM ToolBox for Java
From http://jt400.sourceforge.net/, click . From https://sourceforge.net/projects/jt400/, select the latest version, for example jtopen_9_3.zip.
From the downloaded zip file, extract the file lib/java8/jt400.jar.
Copy the file jt400.jar to directory IntegrationServer/instances/<instance_name>/packages/WmEntireX/code/jars.
Reload the WmEntireX package.
Or:
Restart the Integration Server instance.