After upgrading to 18.104.22.168 from 11.5.9, we have an issue of missing AP functions and menus. We did following to get those missing objects:
FNDLOAD APPS/password 0 Y UPLOAD $FND_TOP/patch/115/import/afsload.lct $AP_TOP/patch/115/import/US/ap115fn.ldt
But After this when we tried to access any AP form we are getting "FRM-92101: A failure has occured on the Server" Error. To resolve this we did following
1. Recompile all invalids.
2. Regenerate all AP forms, PLL and Menus.
3. Bounce Services.
It worked after this.
Happy Troubleshooting !!!