Diagnosis
You wanted to represent a commercial (3-char.) measurement unit formatwith the text &V1&. This text contains lower-case letters.
Only upper-case letters are allowed in the commercial (3-char.)measurement units. Lower-case letters are only allowed in the technical(6-char.) format.

System Response
The representation can not be saved like this, otherwise the datawould be inconsistent.

Procedure
Please check the representation, and change the 3-characterrepresentation for the following entry:
V3