SAP Message WT808 - The current Release &1 not in valid range (&2-&3)

Diagnosis
The system on which the upgrade is running has Release level &v1&. XPRAis only allowed/required in Releases &v2& to &v3&.

System Response
No conversion made.

Procedure
If your Release level is below &v2&, please upgrade your system to therequired Release beforehand.
If your Release level is above &v3&, XPRA conversion is not required.