An infolog message may appear when you try to Activate/Deactivate e.g. BIServices. This issue will get resolved, once SYSXPPAssembly table is truncated in Model database and removing all the files in XPPIL folder in AX 2012 server physical path.
Finally, after running a fresh and full CIL compile and then Activating the required Service e.g. BI Service will get successful.
