diff --git a/api/src/org/labkey/api/query/DefaultQueryUpdateService.java b/api/src/org/labkey/api/query/DefaultQueryUpdateService.java
index 5f2b431de0c..04a036037e1 100644
--- a/api/src/org/labkey/api/query/DefaultQueryUpdateService.java
+++ b/api/src/org/labkey/api/query/DefaultQueryUpdateService.java
@@ -50,6 +50,7 @@
 import org.labkey.api.security.permissions.Permission;
 import org.labkey.api.security.permissions.UpdatePermission;
 import org.labkey.api.util.Pair;
+import org.labkey.api.view.NotFoundException;
 import org.labkey.api.view.UnauthorizedException;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -254,6 +255,10 @@ protected Map<String, Object> _select(Container container, Object[] keys) throws
                     }
                 }
             }
+            else
+            {
+                throw new IllegalStateException("LSID value not found in table - " + table.getName());
+            }
         }
 
         return row;