diff --git a/api/core/workflow/entities/base_node.py b/api/core/workflow/entities/base_node.py
index 694aa8c218..af9e70d039 100644
--- a/api/core/workflow/entities/base_node.py
+++ b/api/core/workflow/entities/base_node.py
@@ -181,7 +181,6 @@ class BaseNodeData(ABC, BaseModel):
     model_config = ConfigDict(extra="allow")
 
     type: NodeType
-    # Keep empty default for backward compatibility with legacy graph payloads.
     title: str = ""
     desc: str | None = None
     version: str = "1"
diff --git a/api/core/workflow/nodes/base/node.py b/api/core/workflow/nodes/base/node.py
index d7bad766a3..839230844e 100644
--- a/api/core/workflow/nodes/base/node.py
+++ b/api/core/workflow/nodes/base/node.py
@@ -245,10 +245,6 @@ class Node(Generic[NodeDataT]):
         if "id" not in config:
             raise ValueError("node config missing required 'id' field")
         node_id = config["id"]
-        if not isinstance(node_id, str) or not node_id.strip():
-            raise ValueError("node config 'id' field must be a non-empty string")
-        if node_id != id:
-            raise ValueError(f"node config 'id' field ('{node_id}') does not match constructor id ('{id}')")
 
         self._node_id = node_id
         self._node_execution_id: str = ""
diff --git a/api/core/workflow/nodes/http_request/entities.py b/api/core/workflow/nodes/http_request/entities.py
index b3152f1511..ba7e8b703c 100644
--- a/api/core/workflow/nodes/http_request/entities.py
+++ b/api/core/workflow/nodes/http_request/entities.py
@@ -90,7 +90,6 @@ class HttpRequestNodeData(BaseNodeData):
     Code Node Data.
     """
 
-    # Keep default for backward compatibility with model construction paths.
     type: NodeType = NodeType.HTTP_REQUEST
     method: Literal[
         "get",
diff --git a/api/core/workflow/nodes/start/entities.py b/api/core/workflow/nodes/start/entities.py
index 72538b0271..ccdb36d4d5 100644
--- a/api/core/workflow/nodes/start/entities.py
+++ b/api/core/workflow/nodes/start/entities.py
@@ -12,6 +12,5 @@ class StartNodeData(BaseNodeData):
     Start Node Data
     """
 
-    # Keep default for backward compatibility with model construction paths.
     type: NodeType = NodeType.START
     variables: Sequence[VariableEntity] = Field(default_factory=list)
diff --git a/api/tests/unit_tests/core/workflow/nodes/test_base_node.py b/api/tests/unit_tests/core/workflow/nodes/test_base_node.py
index b948a8eb3c..3741694a3e 100644
--- a/api/tests/unit_tests/core/workflow/nodes/test_base_node.py
+++ b/api/tests/unit_tests/core/workflow/nodes/test_base_node.py
@@ -72,32 +72,6 @@ def test_node_initialization_falls_back_to_node_type_when_data_type_is_missing()
     assert node.node_data.type == NodeType.ANSWER
 
 
-def test_node_initialization_rejects_empty_config_id():
-    graph_config: dict[str, object] = {}
-    init_params, runtime_state = _build_context(graph_config)
-
-    with pytest.raises(ValueError, match="non-empty string"):
-        _SampleNode(
-            id="node-1",
-            config={"id": "", "data": {"type": NodeType.ANSWER, "title": "Sample", "foo": "bar"}},
-            graph_init_params=init_params,
-            graph_runtime_state=runtime_state,
-        )
-
-
-def test_node_initialization_rejects_mismatched_config_id():
-    graph_config: dict[str, object] = {}
-    init_params, runtime_state = _build_context(graph_config)
-
-    with pytest.raises(ValueError, match="does not match constructor id"):
-        _SampleNode(
-            id="node-1",
-            config={"id": "node-2", "data": {"type": NodeType.ANSWER, "title": "Sample", "foo": "bar"}},
-            graph_init_params=init_params,
-            graph_runtime_state=runtime_state,
-        )
-
-
 def test_missing_generic_argument_raises_type_error():
     graph_config: dict[str, object] = {}