SAP Message 29177 - Unit of measure & not defined

Diagnosis
You want to enter a quantity with unit of measure &V1& in a BOM.

System Response
The system checks which units of measure are defined in the IMG (Globalsettings -> Units of measurement).
Unit of measure &V1& is not defined.

Procedure
Please display the possible entries for units of measure and selectone.
If you still want to enter unit of measure &V1&, please contact yoursystem administrator, in order to have this unit of measure defined.