diff --git a/instruct/handlers.py b/instruct/handlers.py
index 94f8875..77278cb 100644
--- a/instruct/handlers.py
+++ b/instruct/handlers.py
@@ -106,35 +106,46 @@ def get_ad_user_info(user_id: str) -> dict | None:
     return None
 
 
-async def _send_sd_api_request(requester_email: str, subject: str, description: str, city: str) -> str | None:
+async def _send_sd_api_request(
+    requester_cn: str,
+    requester_email: str,
+    subject: str,
+    description: str,
+    city: str
+) -> str | None:
     """
     Автономная прямая отправка HTTP-запроса в Service Desk API v3.
-    Автоматически ищет ID группы и техника по именам из config.
+    Умеет привязывать пользователя по ФИО, Email или Fallback.
     """
-    # Если запрашивает системный ИИ — ищем по ИМЕНИ
-    if requester_email == DEFAULT_REQUESTER or requester_email == "ai@sibcem.ru":
-        requester_payload = {"name": "Искусственный Интеллект"}
-    else:
+    # 1. Формируем структуру заявителя (приоритет: ФИО -> Email -> ИИ)
+    if requester_cn and requester_cn != "N/A":
+        requester_payload = {"name": requester_cn}
+    elif requester_email and requester_email not in (DEFAULT_REQUESTER, "ai@sibcem.ru"):
         requester_payload = {"email_id": requester_email}
+    else:
+        requester_payload = {"name": "Искусственный Интеллект"}
 
-    # Ищем ID группы
+    # 2. Поиск ID группы (пробуем /groups и /group)
     group_id = None
     try:
-        url_groups = f"{SD_URL.rstrip('/')}/api/v3/groups"
         headers = {"TECHNICIAN_KEY": SD_TOKEN}
         async with httpx.AsyncClient(verify=False) as client:
-            resp = await client.get(url_groups, headers=headers, timeout=10.0)
-            if resp.status_code == 200:
-                groups = resp.json().get("groups", [])
-                for g in groups:
-                    if g.get("name") == SD_INSTRUCT_GROUP_NAME:
-                        group_id = g.get("id")
-                        logger.info(f"SD group found: name={SD_INSTRUCT_GROUP_NAME}, id={group_id}")
+            for endpoint in ["/api/v3/groups", "/api/v3/group"]:
+                url_groups = f"{SD_URL.rstrip('/')}{endpoint}"
+                resp = await client.get(url_groups, headers=headers, timeout=10.0)
+                if resp.status_code == 200:
+                    groups = resp.json().get("groups", []) or resp.json().get("group", [])
+                    for g in groups:
+                        if g.get("name") == SD_INSTRUCT_GROUP_NAME:
+                            group_id = g.get("id")
+                            logger.info(f"SD group found: name={SD_INSTRUCT_GROUP_NAME}, id={group_id}")
+                            break
+                    if group_id:
                         break
     except Exception as e:
         logger.warning(f"Failed to fetch SD groups: {e}")
 
-    # Ищем ID техника
+    # 3. Поиск ID техника
     tech_id = None
     try:
         url_techs = f"{SD_URL.rstrip('/')}/api/v3/technicians"
@@ -151,6 +162,7 @@ async def _send_sd_api_request(requester_email: str, subject: str, description:
     except Exception as e:
         logger.warning(f"Failed to fetch SD technicians: {e}")
 
+    # 4. Формируем тело запроса
     payload = {
         "request": {
             "subject": subject,
@@ -161,7 +173,6 @@ async def _send_sd_api_request(requester_email: str, subject: str, description:
             }
         }
     }
-    # Добавляем группу и исполнителя если найдены
     if group_id:
         payload["request"]["group"] = {"id": group_id}
     if tech_id:
@@ -178,9 +189,24 @@ async def _send_sd_api_request(requester_email: str, subject: str, description:
             res_json = response.json()
             ticket_id = res_json.get("request", {}).get("id")
             return str(ticket_id) if ticket_id else None
-        else:
-            logger.error(f"Service Desk API Error ({response.status_code}): {response.text}")
-            return None
+
+        # Fallback: Если по ФИО не нашло, пробуем через DEFAULT_REQUESTER
+        elif response.status_code == 400 and requester_payload != {"name": "Искусственный Интеллект"}:
+            logger.warning(
+                f"ServiceDesk не смог привязать requester={requester_payload}. "
+                f"Повторяем запрос от имени системного заявителя..."
+            )
+            payload["request"]["requester"] = {"name": "Искусственный Интеллект"}
+            payload["request"]["description"] = f"[Пользователь: {requester_cn}]\n\n{description}"
+            data_fb = {"input_data": json.dumps(payload)}
+
+            resp_fb = await client.post(url, headers=headers, data=data_fb, timeout=15.0)
+            if resp_fb.status_code in (200, 201):
+                ticket_id = resp_fb.json().get("request", {}).get("id")
+                return str(ticket_id) if ticket_id else None
+
+        logger.error(f"Service Desk API Error ({response.status_code}): {response.text}")
+        return None
 
 
 async def _find_existing_trueconf_ticket(requester_email: str) -> str | None:
@@ -214,9 +240,9 @@ async def create_sd_ticket_for_trueconf(user_id: str, cn: str) -> str | None:
     """
     subject = "Запрос доступа к Trueconf"
 
-    # Получаем email из AD
+    # Получаем данные пользователя из AD
     ad_info = get_ad_user_info(user_id)
-    requester_email = ad_info.get("mail") or DEFAULT_REQUESTER
+    requester_email = (ad_info.get("mail") if ad_info else None) or DEFAULT_REQUESTER
     city = ad_info.get("city", "Кемерово") if ad_info else "Кемерово"
 
     description = (
@@ -225,10 +251,10 @@ async def create_sd_ticket_for_trueconf(user_id: str, cn: str) -> str | None:
     )
 
     try:
-        logger.info(f"Calling SD API directly: requester={requester_email}, city={city}")
-        ticket_id = await _send_sd_api_request(requester_email, subject, description, city)
+        logger.info(f"Calling SD API directly: cn='{cn}', email='{requester_email}', city='{city}'")
+        ticket_id = await _send_sd_api_request(cn, requester_email, subject, description, city)
         if ticket_id:
-            logger.info(f"SD ticket created for {cn}: #{ticket_id} (requester={requester_email})")
+            logger.info(f"SD ticket created for {cn}: #{ticket_id}")
         else:
             logger.error(f"Failed to create SD ticket for {cn}")
         return ticket_id