services sap.com/com.sap.xi* and sap.com/com.sap.aii* not listed

hello,

I want to access Integration Builder.

But sxmb_ifr and http://.../rep/start/index.jsp does not work. (Error 404:not found)

I found out that the services sap.com/com.sap.xi* and sap.com/com.sap.aii* are not listed in Visual admin. (so I cannot start them of course).

They also cannot be found in D:\usr\sap\ \DVEBMGS01\j2ee\cluster\server0\apps\ sap.com.

I did not do the installation, so I don't know if something is missing and what to do to reinstall it.

Thanks in advance for helping me.