diff --git a/src/models/climbing-route-rating/climbing_routes/climbingRoutes.router.ts b/src/models/climbing-route-rating/climbing_routes/climbingRoutes.router.ts
index 211ebdb..600e7bc 100644
--- a/src/models/climbing-route-rating/climbing_routes/climbingRoutes.router.ts
+++ b/src/models/climbing-route-rating/climbing_routes/climbingRoutes.router.ts
@@ -201,7 +201,23 @@ climbingRoutesRouter.post('/', async (req: Request, res: Response) => {
         let captcha_token = req.query['hcaptcha_response'] as string;
 
         if (isNaN(gym_id) || !name || !difficulty || !captcha_token) {
-            res.status(400).send({'message': 'Missing parameters'});
+            let missing = '';
+            if (isNaN(gym_id)) {
+                missing += 'gym_id;';
+            } else if (!name) {
+                missing += 'name;';
+            } else if (!difficulty) {
+                missing += 'difficulty;';
+            } else if (!captcha_token) {
+                missing += 'token;';
+            } else {
+                missing += 'all good';
+            }
+
+            res.status(400).send({
+                'message': 'Missing parameters',
+                'missing': missing
+            });
             return;
         }