diff --git a/plugins/modules/wireless_design_workflow_manager.py b/plugins/modules/wireless_design_workflow_manager.py
index e54e3cc1c..1561d0753 100644
--- a/plugins/modules/wireless_design_workflow_manager.py
+++ b/plugins/modules/wireless_design_workflow_manager.py
@@ -3115,7 +3115,7 @@
                   - Commonly used for accounting and policy enforcement.
                   - Format typically includes AP MAC address and SSID name.
                 type: str
-                required: true
+                required: false
               unlocked_attributes:
                 description:
                   - List of AAA Radius attribute names to unlock for manual configuration.
@@ -12716,7 +12716,7 @@ def verify_create_update_aaa_radius_attributes_requirement(self, aaa_attr_list):
                 "AP_LABEL_ADDRESS_SSID", "AP_LOCATION", "AP_MACADDRESS", "AP_MACADDRESS_SSID",
                 "AP_NAME", "AP_NAME_SSID", "IPADDRESS", "MACADDRESS", "VLAN_ID"
             ]
-            if called_station_id not in allowed_values:
+            if called_station_id is not None and called_station_id not in allowed_values:
                 self.msg = ("Invalid called_station_id '{0}' for design '{1}'. Must be one of: {2}".format(
                     called_station_id, design_name, allowed_values))
                 self.set_operation_result("failed", False, self.msg, "ERROR").check_return_status()
@@ -12755,7 +12755,7 @@ def verify_create_update_aaa_radius_attributes_requirement(self, aaa_attr_list):
                     payload = {
                         "id": existing["id"],
                         "designName": new_design_name,  # Use new name
-                        "featureAttributes": {"calledStationId": called_station_id},
+                        "featureAttributes": {"calledStationId": called_station_id if called_station_id is not None else existing_called}
                     }
                     if desired_unlocked:
                         payload["unlockedAttributes"] = ["calledStationId"]
@@ -12769,7 +12769,7 @@ def verify_create_update_aaa_radius_attributes_requirement(self, aaa_attr_list):
                     payload = {
                         "id": existing["id"],
                         "designName": design_name,  # Keep original name
-                        "featureAttributes": {"calledStationId": called_station_id},
+                        "featureAttributes": {"calledStationId": called_station_id if called_station_id is not None else existing_called},
                     }
                     if desired_unlocked:
                         payload["unlockedAttributes"] = ["calledStationId"]
diff --git a/tests/unit/modules/catalyst/test_wireless_design_module_workflow_manager.py b/tests/unit/modules/catalyst/test_wireless_design_module_workflow_manager.py
index fb2fb5b03..648dd9877 100644
--- a/tests/unit/modules/catalyst/test_wireless_design_module_workflow_manager.py
+++ b/tests/unit/modules/catalyst/test_wireless_design_module_workflow_manager.py
@@ -623,6 +623,8 @@ def load_fixtures(self, response=None, device=""):
         if "aaa_radius_attribute_none_called_station_id" in self._testMethodName:
             self.run_catalystcenter_exec.side_effect = [
                 self.test_data.get("Get_AAA_RADIUS_ATTRIBUTES_CONFIGURATION"),
+                self.test_data.get("Create_AAA_Radius_Attribute"),
+                self.test_data.get("task_019a0599-07b7-7f20-a2e2-cffc4eccb372"),
             ]
 
         if "create_ssid_invalid_ssid_type" in self._testMethodName:
@@ -1962,7 +1964,7 @@ def test_wireless_design_workflow_manager_playbook_80211be_delete(self):
         )
 
     def test_wireless_design_workflow_manager_aaa_radius_attribute_none_called_station_id(self):
-        """Test that called_station_id=None does not crash with AttributeError."""
+        """Test that creating aaa_radius_attribute without called_station_id succeeds."""
         set_module_args(
             dict(
                 catalystcenter_version='3.1.3.0',
@@ -1974,8 +1976,11 @@ def test_wireless_design_workflow_manager_aaa_radius_attribute_none_called_stati
                 config=self.test_data.get("playbook_aaa_radius_attribute_none_called_station_id")
             )
         )
-        result = self.execute_module(changed=False, failed=True)
-        self.assertIn("called_station_id", result.get('msg', '').lower())
+        result = self.execute_module(changed=True, failed=False)
+        self.assertIn(
+            "aaa_radius_attributes_add",
+            str(result.get('msg', ''))
+        )
 
     def test_wireless_design_workflow_manager_create_ssid_invalid_ssid_type(self):
         """Test that ssid_type='GUEST' (wrong case) fails validation."""