Hi Anton, this might be related to salesorders being edited while you are creating the shipment. Can it be created in a second attempt? ... View more

Hello Anton, for such cases, there are fields on the Sales Order screen  - Requested on: In the Requested on field, specify the date when the customer wants to receive the order. - If with a shipment,  On the Delivery settings tab, "Scheduled shipment" field the date when the shipment of this order is scheduled; by default, it is the Requested on date minus the lead days for this customer. Change the date if needed. In the Shipping rule field, notice the default shipping rule used for this customer. Select another rule if needed. ... View more