What must be enabled to use inventory items as project tasks in Xero?

To use inventory items as project tasks in Xero, the option to indicate "I sell this item" must be enabled. This setting is essential because it establishes the inventory item as a sellable good, thus making it available for inclusion in project tasks. Without this option activated, Xero treats the item as non-sellable, preventing its proper integration into project management functionalities where tasks and billable items are tracked.

Additionally, choosing "I sell this item" signifies that the item can generate revenue within workflow processes, linking the inventory directly to project profitability. It also allows users to associate costs and revenue against project tasks effectively, ensuring accurate financial reporting and project analysis.