diff --git a/src/sonic-yang-mgmt/_sonic_yang_ext.py b/src/sonic-yang-mgmt/_sonic_yang_ext.py
index 8c69f56faf6b..303f920d3ec5 100644
--- a/src/sonic-yang-mgmt/_sonic_yang_ext.py
+++ b/src/sonic-yang-mgmt/_sonic_yang_ext.py
@@ -639,7 +639,7 @@ def delete_node(self, xpath):
                 leaf = ly.Schema_Node_Leaf(snode)
                 if leaf.is_key():
                     # try to delete parent
-                    nodeP = self.find_parent_node(xpath)
+                    nodeP = self.find_parent_data_node(xpath)
                     xpathP = nodeP.path()
                     if self._delete_node(xpath=xpathP, node=nodeP) == False:
                         raise Exception('_delete_node failed')
diff --git a/src/sonic-yang-mgmt/sonic_yang.py b/src/sonic-yang-mgmt/sonic_yang.py
index 6bc330c9ed6a..03d2d106e5f4 100644
--- a/src/sonic-yang-mgmt/sonic_yang.py
+++ b/src/sonic-yang-mgmt/sonic_yang.py
@@ -374,7 +374,7 @@ def find_data_node_schema_xpath(self, data_xpath):
     """
     def add_data_node(self, data_xpath, value):
         try:
-            self.new_node(xpath, value)
+            self.new_data_node(data_xpath, value)
             #check if the node added to the data tree
             self.find_data_node(data_xpath)
         except Exception as e:
diff --git a/src/sonic-yang-mgmt/tests/libyang-python-tests/test_sonic_yang.py b/src/sonic-yang-mgmt/tests/libyang-python-tests/test_sonic_yang.py
index 6002b4386068..8931a36c9c9f 100644
--- a/src/sonic-yang-mgmt/tests/libyang-python-tests/test_sonic_yang.py
+++ b/src/sonic-yang-mgmt/tests/libyang-python-tests/test_sonic_yang.py
@@ -143,7 +143,7 @@ def test_add_node(self, data, yang_s):
         for node in data['new_nodes']:
             xpath = str(node['xpath'])
             value = node['value']
-            yang_s.add_node(xpath, str(value))
+            yang_s.add_data_node(xpath, str(value))
 
             data_node = yang_s.find_data_node(xpath)
             assert data_node is not None