Basically, as you progress in Arch (get lots of chronotes, increase your authority, etc) You can buy upgrades for stuff, such as your arch material storage which has a limit to the number of types of material it can store. Each tier adds some more slots onto the total number of types.
EX: If you don't upgrade your storage and have all the slots filled with at least 1 piece of material, instead of new, unstored material going to your storage, it will either fail to deposit giving you a message (this is if you deposit it in a storage box next to the restoration benches) or it will deposit it to your bank (if you try depositing it using the carts at digsites)
I know this is a slightly older post. Just figured I'd add this on for clarification.
30-Mar-2021 20:35:41