If you select in your intractable actor the AC_MakeInteractable component you can set in the Details tab under Interacting -> Destruction bDestroyOnInteraction to true.
Or for foliage you can set in DT_InteractableFoliage under Interacting -> Destruction bDestroyOnInteraction to true.
The image below shows that and additionally how you can add a pick up sound effect that is only playing locally on the interacting player:
(for more information check Play Sounds on damaging and destruction)
If your game is multiplayer the server validates the interaction and if two players try to pick up (interact) an item at the same time only the player that was quicker will get a notification in AC_MakeInteractable. This notifier is still running on the server: Server on Interaction. So the server could give an item to the player. You would need to implement this yourself since this interaction system does not contain any inventory system, it is only an interaction system that manages the interaction, destruction and server validated notify on the player that interacted / picked up the interactable.
Check Interaction Notify events for player (Event Dispatchers and Interface) to learn how to add these notify events. Then you can add for example this to your character/pawn or player controller:
Because this is called on the server and you want something to be called only on the player you can call an event that you set to ‘Run on owning Client’ in the details tab under ‘Replicates’.
