When the products are picked and are located in the goods issue zone of the warehouse, the goods issue can be posted, indicating that the materials have left your warehouse and your stock value decreases. The goods issue posting can be triggered manually from the outbound delivery order, but it can also be triggered automatically when the products arrive are at the staging area or when the truck with the products leaves the warehouse.
For the goods issue, another SAP EWM document is created. This document is called the EWM outbound delivery. The EWM outbound delivery sends information about the goods issue posting back to the LE outbound delivery in SAP S/4HANA. From this, the inventory management document and the financial documents are then created.
Why do we need an additional document in the system? When you post the goods issue, it must always be for the complete quantity in the LE outbound delivery. It is not possible to post a partial goods issue. But a partial goods issue could be required because maybe it is not possible to deliver the complete requested quantity at a certain point in time. This could be because there is less physical stock in reality in your warehouse then what you see as available in your system, or there is maybe not enough capacity for transportation. When a partial goods issue is necessary, a delivery split of the LE outbound delivery is required. This is triggered through the EWM outbound delivery document.