Solved
Stacked items " i got this message wile in game !"
" I was playing on the mission Harvel went deep to activate the 3rd monolith before i activated the monolith i went to the cash box to see just what i was going to get.
But when i found a remnant Key it told me that my inventory was full of stacked items that i needed to delete, remove or sell some items."
"Can any one please shed some light on this strange situation i found my self in?"
- I had this problem too but then realized the issue. Simpy put: you can only have so many Remnant keys in your inventory. I'm not sure why as I haven't encountered this with any other item. But you probably won't need to use all the one's in your inventory (unless you just dont like doing Remnant puzzles) but even then you can buy more.
