Sometimes a quest may ask to produce more items that can be stored in your inventory. For example, you need to produce 45 coffee tables, but the inventory limit is 30.
There is no need to worry, as you can sell items from your inventory to make space for the new ones.

How to do it?
1. Go to your inventory by clicking on the cardboard box icon in the lower right corner of the game

2. Click on the category you need (Furniture factory for the tables, Cargo port for metal beams, etc.), find the necessary item and click on the cashbox icon.

3. Select the necessary amount using "+" and "-" buttons and press "Sell".
Now you have enough space to produce more items and fulfill the requirements of the quest!