Hinterland Cages Requisition

Nope. You are SOL. Once those enemies are cleared out there is no way to get locks. I think there's a way to dupe them on PC but you have to have some in your inventory, and I don't know the steps required to do it.

Words to live by: accept no requisition that is anything other than rocks and flowers.  Save just before talking to the Req officer so you can reload a bad req and try again.

Iron and Drakestone? No problem.

Nevarrite and Vandal Aria? No problem.

Fereldan Locks and Iron? GTFO! Reloading ...

I even avoid common leather and cloth reqs, if you don't happen to have them, you have to go chase down those critters or mooks to get it.

Beware req items like "Malachite" also -- those are not rocks, those are effectively quest items.

Probably oversights that just didn't get fixed, which is annoying. I don't even think you can get decorative gems anymore.....I never see them dropped by anything. Would be nice if you could pick from a list of req's instead of them being random.

If you are on PC there is a mod you can use (Crestwood req. store) so that the Crestwood store will stock all the requisition materials you could possibly need. It also will buy stuff at ridiculously high prices but I don't use it for that other than stuff they pay out less than 100 gold for. The store becomes available once the lake rift is closed.

You can use it for hard to get req items (like malachite) or specialization items if you don't want to go the required zone yet or feel like hunting down Champion #3 for an hour (yes, I've done that   ).

Yes, you download and run the mod manager through the DAI Tools Suite Loader.

Here's a list of recommendations:

https://www.reddit.com/r/dragonage/comments/53kncd/dai_spoilers_recommend_dai_mods/

Another, closer to home:

bsn.boards.net/thread/1940/mods-glorious