Message SAP /BEV1/TS1041 - No shipment for partner &1 on &2: Delivery &3 already in shipment &4

Diagnosis
A shipment for this day is not created for this partner
Reason: at least one delivery is already contained in a shipment.Potential, additional deliveries need to be entered manually in theshipment.
It is possible to navigate by means of the 'Shipment' button.