You are creating a sales order, you have already defined the items in the sales order and then you enter a delivering plant into the sales order overview (Deliver.Plant) and click enter, a warning message is displayed: The delivering plant will not be copied into the existing items.
SAP S/4HANA Cloud
This message is not an error, is just a warning message.
It happens because the delivery plant is automatically determined when you enter an item in the sales order and it is explained in the below documentation:
2787562 - How is the delivering plant of sales order item determined
The field Deliver.Plant in the overview screen is just for inputting plant into newly created items. This is explained in the below documentation:
2769259 - The field Deliver.Plant remains blank/empty in Sales Order.
This is a standard system behavior.
RV45A-DWERK, DWERK, Deliver.Plant, delivering plant, sales order, overview, warning message, message no.V1107, V1 107 , KBA , SD-SLS-SO , Sales Orders , SD-SLS , Sales , How To