Target version & does not exist

What causes this issue?

Target version &V1& is not defined.

System Response

Processing stopped

How to fix this error?

Do one of the following:
Check your input or
Contact your system administrator or some other person authorized to
maintain versions


Action by system administrator
Define a version.
IF &DEVICE& ='SCREEN'
<DS:TRAN.OKEQ>Proceed</>
ENDIF

Error message extract from SAP system. Copyright SAP SE.