diff --git a/src/rougail/user-data-environment/data.py b/src/rougail/user-data-environment/data.py
index bb6c377..f1d746e 100644
--- a/src/rougail/user-data-environment/data.py
+++ b/src/rougail/user-data-environment/data.py
@@ -49,33 +49,13 @@ class RougailUserDataEnvironment:
         else:
             self.errors = []
             self.warnings = []
-        # this variable will be used for generating warnings 
+        # this variable will be used for generating warnings
         # about unused ROUGAIL_ environment variables
-        self.unused_environment_var = get_rougail_environment_var()    
+        self.unused_environment_var = get_rougail_environment_var()
 
     def run(self):
         self.config.property.read_write()
-        if self.rougailconfig['environment.mandatory']:
-            current_titles = []
-            while True:
-                mandatories = self.config.value.mandatory()
-                if not mandatories:
-                    break
-                mandatory = mandatories[0]
-                path = mandatory.path()
-                if '.' in path:
-                    current_config = self.config
-                    for idx, p in enumerate(path.split('.')[0:-1]):
-                        current_config = current_config.option(p)
-                        if idx < len(current_titles):
-                            if current_titles[idx] == p:
-                                continue
-                            current_titles = current_titles[0:idx]
-                        current_titles.append(p)
-                        self.print(current_config.description(), idx)
-                self.display_environment(mandatory)
-        else:
-            self.parse(self.config)
+        self.parse(self.config)
         self.config.property.read_only()
         # if there are unused environment variables
         if len(self.unused_environment_var):
@@ -96,14 +76,14 @@ class RougailUserDataEnvironment:
         # here we retrieve the conversion func of the considered type
         # carefull, it could be None -> in this case, do nothing
         type_obj = CONVERT_OPTION.get(option_type, {}).get("func")
-        # 
+        #
         rougail_environment_var = get_rougail_environment_var()
         option_name = option.path()
-        # this is used only for warning purposes 
+        # this is used only for warning purposes
         self.unused_environment_var.remove(option_name)
         # let's parse the environment variables values
         if option_name in rougail_environment_var:
-            if ismulti:  
+            if ismulti:
                 option_bash_value = get_rougail_environment_dict()[option_name]
                 # here we expect the bash option value of a multi to be coma separated:
                 option_value = option_bash_value.split(",")