When trying to confirm a production order, the unit of measure is not matching with the unit of the finished material.
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SAP S/4HANA Cloud.
When confirming a production order operation, the system will take into consideration the "Unit of measure for operation" field maintained in the operation as the default value for the operation unit.
Check the material routing, and confirm the unit of measure maintained for the operation that you're trying to confirm.
Unit of measure, Production Order, Routing, Wrong, incorrect, CO11N, Confirm Production Operation, Confirm Production Order Operation. , KBA , PP-FIO-SFC , Fiori UI for Production Orders , How To