Extend Use Case Example: Place Order

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The Extend Use Case Example template demonstrates an extension of the "Place Order" use case. In this scenario, the Warehouse Manager plays a role in the process of ordering items. The template highlights the possible extension point when there is no inventory available.

The primary use case, "Place Order," involves the action of placing an order for items. The Warehouse Manager takes part in this process by initiating and managing the order. However, an extension point is introduced when there is no inventory available for the requested items.

When the system identifies that there is no inventory for the items being ordered, it triggers the extension point. This indicates that additional actions or alternative processes need to be implemented to address the lack of inventory. How the system handles this situation can vary, such as placing the order on hold, notifying the Warehouse Manager to source the items from alternative suppliers, or informing the customer about the delay.

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