diff --git a/fastdeploy/engine/common_engine.py b/fastdeploy/engine/common_engine.py
index 801067952..aa1ebe111 100644
--- a/fastdeploy/engine/common_engine.py
+++ b/fastdeploy/engine/common_engine.py
@@ -592,18 +592,23 @@ class EngineSevice:
                 request, insert_task = None, []
                 results: List[Tuple[str, Optional[str]]] = list()
                 if data:
-                    request = Request.from_dict(data)
-                    start_span("ENQUEUE_ZMQ", data, trace.SpanKind.PRODUCER)
-                    llm_logger.debug(f"Receive request: {request}")
-
                     err_msg = None
-                    if self.guided_decoding_checker is not None:
-                        request, err_msg = self.guided_decoding_checker.schema_format(request)
+                    try:
+                        request = Request.from_dict(data)
+                        start_span("ENQUEUE_ZMQ", data, trace.SpanKind.PRODUCER)
+                        llm_logger.debug(f"Receive request: {request}")
+                    except Exception as e:
+                        llm_logger.error(f"Receive request error: {e}, {traceback.format_exc()!s}")
+                        err_msg = str(e)
+                        results.append((data["request_id"], err_msg))
 
-                    if err_msg is not None:
-                        llm_logger.error(err_msg)
-                        results.append((request.request_id, err_msg))
-                    else:
+                    if self.guided_decoding_checker is not None and err_msg is None:
+                        request, err_msg = self.guided_decoding_checker.schema_format(request)
+                        if err_msg is not None:
+                            llm_logger.error(f"Receive request error: {err_msg}")
+                            results.append((request.request_id, err_msg))
+
+                    if err_msg is None:
                         insert_task.append(request)
 
                 response = self.scheduler.put_requests(insert_task)
@@ -615,9 +620,10 @@ class EngineSevice:
                     added_requests[request.request_id] += 1
 
                 for request_id, failed in results:
-                    added_requests[request_id] -= 1
-                    if added_requests[request_id] == 0:
-                        added_requests.pop(request_id)
+                    if request_id in added_requests:
+                        added_requests[request_id] -= 1
+                        if added_requests[request_id] == 0:
+                            added_requests.pop(request_id)
 
                     if failed is None:
                         main_process_metrics.num_requests_waiting.inc(1)
@@ -631,7 +637,7 @@ class EngineSevice:
                     )
                     # Since the request is not in scheduler
                     # Send result by zmq directly
-                    self.zmq_server.send_multipart(request_id, error_result)
+                    self.zmq_server.send_multipart(request_id, [error_result])
             except Exception as e:
                 llm_logger.error(
                     f"Error happend while receving new request from zmq, details={e}, "
diff --git a/fastdeploy/entrypoints/engine_client.py b/fastdeploy/entrypoints/engine_client.py
index c143e6533..aeb99f33f 100644
--- a/fastdeploy/entrypoints/engine_client.py
+++ b/fastdeploy/entrypoints/engine_client.py
@@ -216,35 +216,35 @@ class EngineClient:
         Validate stream options
         """
 
-        if data.get("n"):
+        if data.get("n") is not None:
             if data["n"] != 1:
                 raise ValueError("n only support 1.")
 
-        if data.get("max_tokens"):
+        if data.get("max_tokens") is not None:
             if data["max_tokens"] < 1 or data["max_tokens"] >= self.max_model_len:
                 raise ValueError(f"max_tokens can be defined [1, {self.max_model_len}).")
 
-        if data.get("reasoning_max_tokens"):
+        if data.get("reasoning_max_tokens") is not None:
             if data["reasoning_max_tokens"] > data["max_tokens"] or data["reasoning_max_tokens"] < 1:
                 raise ValueError("reasoning_max_tokens must be between max_tokens and 1")
 
-        if data.get("top_p"):
+        if data.get("top_p") is not None:
             if data["top_p"] > 1 or data["top_p"] < 0:
                 raise ValueError("top_p value can only be defined [0, 1].")
 
-        if data.get("frequency_penalty"):
+        if data.get("frequency_penalty") is not None:
             if not -2.0 <= data["frequency_penalty"] <= 2.0:
                 raise ValueError("frequency_penalty must be in [-2, 2]")
 
-        if data.get("temperature"):
+        if data.get("temperature") is not None:
             if data["temperature"] < 0:
                 raise ValueError("temperature must be non-negative")
 
-        if data.get("presence_penalty"):
+        if data.get("presence_penalty") is not None:
             if not -2.0 <= data["presence_penalty"] <= 2.0:
                 raise ValueError("presence_penalty must be in [-2, 2]")
 
-        if data.get("seed"):
+        if data.get("seed") is not None:
             if not 0 <= data["seed"] <= 922337203685477580:
                 raise ValueError("seed must be in [0, 922337203685477580]")
 
diff --git a/tests/ce/server/test_evil_cases.py b/tests/ce/server/test_evil_cases.py
index aba46cd09..18c445f4b 100644
--- a/tests/ce/server/test_evil_cases.py
+++ b/tests/ce/server/test_evil_cases.py
@@ -380,9 +380,6 @@ def test_max_tokens_min():
     payload = build_request_payload(TEMPLATE, data)
     resp = send_request(URL, payload).json()
     assert resp.get("detail").get("object") == "error", "max_tokens未0时API未拦截住"
-    assert "reasoning_max_tokens must be between max_tokens and 1" in resp.get("detail").get(
-        "message", ""
-    ), "未返回预期的 max_tokens 达到异常值0 的 错误信息"
 
 
 def test_max_tokens_non_integer():