SAP Message UCF6108 - Seledted items: Shares: Item &1 has no fixed value for unit of measure

Diagnosis
The breakdown categories of items specified under Selected Itemson the Shares tab must have a fixed value for the characteristicwith the role unit of measure.
The breakdown category of item &V1& does not meet this requirement.

Procedure
Check that the selected items have the appropriate breakdowncategories.