In the current state, InventoryStorageManagerComponent can only handle one Attribute.

Example:

If you have 2x WeaponAttachmentAttribute in your prefab (because item can be used on different muzzles or calibers), this item can not Equip/Attached.

Because InventoryStorageManagerComponent only check for the first Attribute in: TryInsertItemInStorage and TryMoveItemToStorage

in the future it will be much better that the StorageManager is checking all Attributes and if one is TRUE, then the Item can Insert/Move.