wouldn't it be better, to use SE84 instead? I don't know which release you currently have, but in our 4.70 System in SE84 on the left side you have an tree view, where you can select enhancements and project. If you press then Shift + F9 (all selection) you will get the screen (see attached screenshot)
There you can select all implemented enhancements. You can also select to get the active solely and so on ...
If you want to develop a report by yourself anyway, you should take a look at dev class 'SECE' (transaction SE80) and tables MODSAP, MODATTR, MODSAPA, MODSAPT.
hope this helps.
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