Hi Alex,
Ireland (11) doesn't seem to be a trip provision variant delivered as standard, so I'd assume it's been copied from another one, is that right?
A good one to copy it from is probably 08 (UK) and if that's not changed re per diems, then you shouldn't have any per diem issues. If you can't make a fresh start, I'd suggest 2 things:
Clear all entries for per diem calculations for MOREI 11 from tables for "Per diem amounts for meals" as well *** "Maximum amounts for meals", if you don't need them either.
Then go to "Define Schema and individual field control" (also transaction FITVFELD) and
- clear flag "per diem meals checkbox set" to have that blank as a default and
- hide the checkbox to switch on per diems from all screens you use
You may have to do this in the WebDynpro appications as well.
Then you should be clean.
best wishes
Sven