In the inventory overview "Manage Products", the "Available" column shows the stock that hasn't been allocated to any campaigns yet, and which is therefore available to be allocated to new campaigns.

👉 For example: when 20 new units of a specific product arrive at the warehouse, these 20 units will appear on the "In stock" column.
From there, you can decide to allocate up to 20 units of this product to a campaign.
Let's say you allocate 5 units to a campaign, then the "Available" stock will decrease to 15. 

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