Message SAP XU017 - & is &. Change only in the "Quantity in &" field

Diagnosis
In the quantity field for alternative units of measure, you have chosenthe unit of issue or production unit.

System Response
You can only change this unit of measure in the "Quantity in unit ofissue" or "Quantity in production unit" field.

Procedure
If you want to enter the quantity in this unit of measurement, choosethe corresponding field "Quantity in unit of issue" or "Quantity inproduction unit"