SAP Message PV478 - The short name &2 is not unique

Diagnosis
You have entered "&V1&" as the short name for the object. Anotherobject has been found in the database (object ID &V3&) with this name.
Your entry was converted to upper case letters to check whether anotherobject exists with this changed abbreviation &V2&.
This is not an error, it is just for your information.

System Response
None

Procedure
If you wish to identify your objects with unique abbreviations, youshould choose another short name.
It is not mandatory to use unique names but it is advisable since itspeeds up the selection process when you enter a search string for yourobject.