diff --git a/backend/src/routes/ttlock.ts b/backend/src/routes/ttlock.ts
index 3bc1f8f..52b8e33 100644
--- a/backend/src/routes/ttlock.ts
+++ b/backend/src/routes/ttlock.ts
@@ -64,10 +64,10 @@ const ttlockRoutes: FastifyPluginAsync = async (fastify) => {
   // ── PATCH /api/hotels/:slug/ttlock/config ───────────────────────────────────
   fastify.patch<SlugParam & {
     Body: {
-      isEnabled?:     boolean
-      clientId?:      string
-      clientSecret?:  string
-      cardSectors?:   string
+      is_enabled?:     boolean
+      client_id?:      string
+      client_secret?:  string
+      card_sectors?:   string
     }
   }>('/api/hotels/:slug/ttlock/config', { onRequest: [fastify.authenticate] }, async (req, reply) => {
     const { slug } = req.params
@@ -76,7 +76,7 @@ const ttlockRoutes: FastifyPluginAsync = async (fastify) => {
     const hotelId = await getHotelId(slug)
     if (!hotelId) return reply.code(404).send({ error: 'Hotel not found' })
 
-    const { isEnabled, clientId, clientSecret, cardSectors } = req.body
+    const { is_enabled: isEnabled, client_id: clientId, client_secret: clientSecret, card_sectors: cardSectors } = req.body
 
     await db.query(
       `INSERT INTO hotel_ttlock_config (hotel_id, is_enabled, client_id, client_secret, card_sectors)
@@ -100,7 +100,7 @@ const ttlockRoutes: FastifyPluginAsync = async (fastify) => {
 
   // ── POST /api/hotels/:slug/ttlock/test ──────────────────────────────────────
   // Проверяем: агент онлайн, энкодер отвечает на COM-порту
-  fastify.post<SlugParam & { Body: { workstationId: string } }>(
+  fastify.post<SlugParam & { Body: { workstation_id: string } }>(
     '/api/hotels/:slug/ttlock/test',
     { onRequest: [fastify.authenticate] },
     async (req, reply) => {
@@ -110,8 +110,8 @@ const ttlockRoutes: FastifyPluginAsync = async (fastify) => {
       const hotelId = await getHotelId(slug)
       if (!hotelId) return reply.code(404).send({ error: 'Hotel not found' })
 
-      const { workstationId } = req.body
-      if (!workstationId) return reply.code(400).send({ error: 'workstationId required' })
+      const workstationId = req.body.workstation_id
+      if (!workstationId) return reply.code(400).send({ error: 'workstation_id required' })
 
       const { rows: wsRows } = await db.query(
         'SELECT ttlock_com_port FROM workstations WHERE id = $1 AND hotel_id = $2',
@@ -163,7 +163,7 @@ const ttlockRoutes: FastifyPluginAsync = async (fastify) => {
   })
 
   // ── POST /api/hotels/:slug/ttlock/room-locks ─────────────────────────────────
-  fastify.post<SlugParam & { Body: { roomId: string; lockMac: string; lockName?: string } }>(
+  fastify.post<SlugParam & { Body: { room_id: string; lock_mac: string; lock_name?: string } }>(
     '/api/hotels/:slug/ttlock/room-locks',
     { onRequest: [fastify.authenticate] },
     async (req, reply) => {
@@ -173,9 +173,9 @@ const ttlockRoutes: FastifyPluginAsync = async (fastify) => {
       const hotelId = await getHotelId(slug)
       if (!hotelId) return reply.code(404).send({ error: 'Hotel not found' })
 
-      const { roomId, lockMac, lockName } = req.body
+      const { room_id: roomId, lock_mac: lockMac, lock_name: lockName } = req.body
       // Нормализуем MAC: убираем двоеточия, приводим к верхнему регистру
-      const mac = lockMac.replace(/:/g, '').toUpperCase()
+      const mac = (lockMac ?? '').replace(/:/g, '').toUpperCase()
       if (!/^[0-9A-F]{12}$/.test(mac)) {
         return reply.code(400).send({ error: 'MAC-адрес должен быть 12 HEX-символов (напр. 42A6BBF5ECE5)' })
       }
@@ -203,7 +203,7 @@ const ttlockRoutes: FastifyPluginAsync = async (fastify) => {
   })
 
   // ── POST /api/hotels/:slug/bookings/:bookingId/issue-card ────────────────────
-  fastify.post<BookingParam & { Body: { workstationId?: string } }>(
+  fastify.post<BookingParam & { Body: { workstation_id?: string } }>(
     '/api/hotels/:slug/bookings/:bookingId/issue-card',
     { onRequest: [fastify.authenticate] },
     async (req, reply) => {
@@ -244,11 +244,11 @@ const ttlockRoutes: FastifyPluginAsync = async (fastify) => {
       let workstationId: string
       let comPort: string
 
-      if (req.body?.workstationId) {
+      if (req.body?.workstation_id) {
         // Явно указано рабочее место
         const { rows: wsRows } = await db.query(
           'SELECT id, ttlock_com_port FROM workstations WHERE id = $1 AND hotel_id = $2',
-          [req.body.workstationId, hotelId],
+          [req.body.workstation_id, hotelId],
         )
         const ws = wsRows[0]
         if (!ws || !ws.ttlock_com_port) {