SAP Message /SPE/ID_HANDLING051 - No UOM found for calculation of cumulative quantity for SA &1, item &2

Diagnosis No order unit has been maintained for scheduling agreement &1,item &2. Therefore, the cumulative quantity in transit orcumulative quantity received (based on inbound deliveries) cannot becalculated for scheduling agreement &1, item &2. Procedure Please maintain a valid order unit for scheduling agreement &1,item &2.