diff --git a/exasol/toolbox/metrics.py b/exasol/toolbox/metrics.py
index 8527a0adc..2a32abe43 100644
--- a/exasol/toolbox/metrics.py
+++ b/exasol/toolbox/metrics.py
@@ -25,6 +25,15 @@
 
 
 class Rating(Enum):
+    """
+    A = Excellent
+    B = Good
+    C = Satisfactory (Ok, could be better though)
+    D = Poor (Improvement necessary)
+    E = Bad (Need for action)
+    F = Broken (Get it fixed!)
+    N/A = Rating is not available
+    """
     A = "A"
     B = "B"
     C = "C"
diff --git a/metrics-schema/metrics_schema.py b/metrics-schema/metrics_schema.py
index 7567fd1f2..81d816467 100644
--- a/metrics-schema/metrics_schema.py
+++ b/metrics-schema/metrics_schema.py
@@ -47,7 +47,7 @@ class Metrics(BaseModel):
 if __name__ == "__main__":
     schema = {
         "$schema": "https://json-schema.org/draft/2020-12/schema",
-        "$id": "https://schemas.exasol.com/metrics-0.1.0.json",
+        "$id": "https://schemas.exasol.com/project-metrics-0.1.0.json",
     }
     schema.update(Metrics.model_json_schema())
     print(json.dumps(schema, indent=2))