LCIA for older ecoinvent versions not supported

Author: cmutel

bw2io/ecoinvent.py

@@ -248,6 +248,10 @@ def import_ecoinvent_release(
         soup.write_database()
 
     if lcia:
+        subversion = int(version.split(".")[1])
+        if subversion < 4:
+            raise ValueError("LCIA import for versions 3.0-3.3 not supported")
+
         if biosphere_name is None:
             biosphere_name = bd.config.biosphere
         if biosphere_name not in bd.databases or not len(bd.Database(biosphere_name)):