I've been searching the SCN, Google and Notes regarding this issue and not able to find a proper solution for it.
I need to do a restriction of the results based on Storage Location.
The authorization object M_MSEG_LGO does not have any effect at all when it comes to reports.
I had this problem before for a particular client requirement. At that time there was no fix and we had to use an enhancement point (I forget the details now) to achieve this. Note 370935 has a statement to the effect that this type of restriction is not planned (albeit quite an old note).
Thanks for your reply. In fact, I have come across that Note but it was the fact that it was a really old one that made me search for any possible solution that might have come later (although the note would have been obsolete, but who knows...).