Updated error message

src/service/clmcservice/aggregationapi/utilities.py

@@ -73,7 +73,7 @@ def validate_config_content(configuration):
     except:
         raise AssertionError("Configuration must be a JSON object.")
 
-    assert len(configuration) == len(CONFIG_ATTRIBUTES), "Configuration mustn't contain more attributes than the required ones."
+    assert len(configuration) == len(CONFIG_ATTRIBUTES), "Configuration mustn't contain a different number of attributes than the number of required ones."
 
     for attribute in CONFIG_ATTRIBUTES:
         assert attribute in configuration, "Required attribute not found in the request content."