diff --git a/tests/test_mandatory.py b/tests/test_mandatory.py
index 35edfa4..1d1c8e6 100644
--- a/tests/test_mandatory.py
+++ b/tests/test_mandatory.py
@@ -746,3 +746,15 @@ def test_mandatory_and_disabled():
     cfg = Config(od1)
     cfg.property.read_write()
     cfg.value.get()
+
+
+def test_mandatory_permissive():
+    val1 = StrOption('val1', "", properties=('mandatory', 'hidden'))
+    od2 = OptionDescription('val1', '', [val1])
+    od1 = OptionDescription('rootconfig', '', [od2])
+    cfg = Config(od1)
+    cfg.property.read_write()
+    compare(cfg.value.mandatory(set_permissive=False), [])
+    compare(cfg.value.mandatory(), ['val1.val1'])
+    compare(cfg.option("val1").value.mandatory(set_permissive=False), [])
+    compare(cfg.option("val1").value.mandatory(), ['val1.val1'])
diff --git a/tests/test_metaconfig.py b/tests/test_metaconfig.py
index 1637f86..311d41c 100644
--- a/tests/test_metaconfig.py
+++ b/tests/test_metaconfig.py
@@ -4,7 +4,7 @@ do_autopath()
 
 from tiramisu.setting import groups, owners
 from tiramisu import IntOption, StrOption, NetworkOption, NetmaskOption, BoolOption, ChoiceOption, \
-                     IPOption, OptionDescription, Leadership, Config, GroupConfig, MetaConfig, \
+                     IPOption, OptionDescription, DynOptionDescription, Leadership, Config, GroupConfig, MetaConfig, \
                      Calculation, Params, ParamOption, ParamValue, calc_value, ParamSelfOption, \
                      valid_network_netmask, valid_not_equal
 from tiramisu.error import ConfigError, ConflictError, PropertiesOptionError, LeadershipError
@@ -1306,3 +1306,26 @@ def test_meta_get_config():
     assert isinstance(meta.config('name1'), Config)
     with pytest.raises(ConfigError):
         meta.config('unknown')
+
+
+def test_meta_dyndescription():
+    lst = StrOption('lst', '', multi=True)
+    st = StrOption('st', '')
+    dod = DynOptionDescription('dod', '', [st], identifiers=Calculation(return_value, Params(ParamOption(lst))))
+    od = OptionDescription('od', '', [dod, lst])
+    cfg = Config(od, name="cfg")
+    cfg.owner.set(owners.config)
+    meta1 = MetaConfig([cfg], name='meta1')
+    meta1.owner.set(owners.meta1)
+    meta2 = MetaConfig([meta1], name='meta2')
+    meta2.owner.set(owners.meta2)
+    cfg.property.read_write()
+    meta2.option('lst').value.set(["val1", "val2"])
+    meta1.option('lst').value.set(["val3", "val4"])
+    cfg.option('lst').value.set(["val5", "val6"])
+    assert cfg.option('dodval6.st').value.get() is None
+    with pytest.raises(AttributeError):
+        meta1.option('dodval6.st').value.get()
+    assert parse_od_get(cfg.value.get()) == {'dodval5.st': None, 'dodval6.st': None, 'lst': ['val5', 'val6']}
+    assert parse_od_get(meta1.value.get()) == {'dodval3.st': None, 'dodval4.st': None, 'lst': ['val3', 'val4']}
+    assert parse_od_get(meta2.value.get()) == {'dodval1.st': None, 'dodval2.st': None, 'lst': ['val1', 'val2']}
diff --git a/tiramisu/api.py b/tiramisu/api.py
index 3495fb4..a8855a7 100644
--- a/tiramisu/api.py
+++ b/tiramisu/api.py
@@ -1198,13 +1198,14 @@ class TiramisuOptionValue(CommonTiramisuOption, _TiramisuODGet):
         """Length for a leadership"""
         return self._subconfig.parent.get_length_leadership()
 
-    def mandatory(self, *, return_type=False):
+    def mandatory(self, *, return_type=False, set_permissive=True):
         """Return path of options with mandatory property without any value"""
         subconfig = self._subconfig
         ori_config_bag = self._subconfig.config_bag
         config_bag = ori_config_bag.copy()
         config_bag.properties -= {"mandatory", "empty", "warnings"}
-        config_bag.set_permissive()
+        if set_permissive:
+            config_bag.set_permissive()
         self._subconfig.config_bag = config_bag
         try:
             if subconfig.option.impl_is_optiondescription():
@@ -1488,11 +1489,12 @@ class TiramisuContextInformation(TiramisuConfig):
 class TiramisuContextValue(TiramisuConfig, _TiramisuODGet):
     """Manage config value"""
 
-    def mandatory(self):
+    def mandatory(self, set_permissive=True):
         """Return path of options with mandatory property without any value"""
         config_bag = self._config_bag.copy()
         config_bag.properties -= {"mandatory", "empty", "warnings"}
-        config_bag.set_permissive()
+        if set_permissive:
+            config_bag.set_permissive()
         root = self._config_bag.context.get_root(config_bag)
         options = []
         for subconfig in self._config_bag.context.walk(