diff --git a/Server/src/main/java/uulm/teamname/marvelous/server/Server.java b/Server/src/main/java/uulm/teamname/marvelous/server/Server.java
index 3adfd30..fa87176 100644
--- a/Server/src/main/java/uulm/teamname/marvelous/server/Server.java
+++ b/Server/src/main/java/uulm/teamname/marvelous/server/Server.java
@@ -5,9 +5,11 @@ import com.beust.jcommander.ParameterException;
 import org.tinylog.Logger;
 import org.tinylog.configuration.Configuration;
 import uulm.teamname.marvelous.gamelibrary.config.CharacterConfig;
+import uulm.teamname.marvelous.gamelibrary.config.FieldType;
 import uulm.teamname.marvelous.gamelibrary.config.PartyConfig;
 import uulm.teamname.marvelous.gamelibrary.config.ScenarioConfig;
 import uulm.teamname.marvelous.gamelibrary.json.JSON;
+import uulm.teamname.marvelous.gamelibrary.json.ValidationUtility;
 import uulm.teamname.marvelous.server.args.ServerArgs;
 import uulm.teamname.marvelous.server.netconnector.MarvelousServer;
 
@@ -124,7 +126,30 @@ public class Server {
             System.exit(1);
         }
 
-        // TODO: Check whether Scenario Config is valid
+        Logger.trace("Validating configuration file...");
+
+        var violations = ValidationUtility.validate(config.get());
+
+        if (violations.isPresent()) {
+            Logger.error("Scenario Configuration vas invalid: {}", violations.get());
+            System.exit(1);
+        }
+
+        int grassFields = 0;
+
+        for (FieldType[] row: config.get().scenario) {
+            for (FieldType type: row) {
+                if (type == FieldType.GRASS) grassFields++;
+            }
+            if (grassFields > 18) break;
+        }
+
+        if (grassFields <= 18) {
+            Logger.error(
+                    "Scenario Configuration vas invalid: Only {} grass fields found, which is less than 18"
+                    , grassFields);
+            System.exit(1);
+        }
 
         Logger.info("Scenario Config file loaded");
 
@@ -144,8 +169,12 @@ public class Server {
             System.exit(1);
         }
 
+        var violations = ValidationUtility.validate(config.get());
 
-        // TODO: Check whether Character Config is valid
+        if (violations.isPresent()) {
+            Logger.error("Scenario Configuration vas invalid: {}", violations.get());
+            System.exit(1);
+        }
 
         Logger.info("Character Config file loaded");
 
@@ -165,7 +194,13 @@ public class Server {
             System.exit(1);
         }
 
-        // TODO: Check whether Party Config is valid
+
+        var violations = ValidationUtility.validate(config.get());
+
+        if (violations.isPresent()) {
+            Logger.error("Party Configuration vas invalid: {}", violations.get());
+            System.exit(1);
+        }
 
         Logger.info("Party Config file loaded");