Hi Slarti,
I haven't played this game, but looking at Len Green's walkthrough it states:
If you fail to obtain either a search warrant or an arrest warrant, enter your case file again and look beneath the box marked “Supporting Evidence & Witnesses”. The number of your correct items is always listed there. By adding &/or subtracting different icons , you can fairly easily determine which are necessary and which are not.
In this walkthrough an occasional item may be listed which is not essential … but don’t take that for granted. If you enter ALL those listed you are certain to get your warrant!
Does that help you at all?
Otherwise let's wait for others who are familiar with this part of the game to advise us here.
