diff --git a/src/controllers/userController.js b/src/controllers/userController.js
index 39a9ed9c..199b094c 100644
--- a/src/controllers/userController.js
+++ b/src/controllers/userController.js
@@ -2131,3 +2131,67 @@ exports.updateadvanceForSupplier = async (req, reply) => {
     throw boom.boomify(err);
   }
 };
+
+
+exports.splitBookingForSupplier = async (req, reply) => {
+  try {
+    const { id } = req.params;
+    const { capacity, quantity, date, time, quoted_amount } = req.body;
+
+    // 1) Find existing booking
+    const existing = await RequestedBooking.findById(id);
+    if (!existing) {
+      return reply.code(404).send({ status_code: 404, message: "Booking not found" });
+    }
+
+    // 2) Update the original booking
+    existing.capacity = `${capacity} L`;
+    existing.quantity = "1";
+    existing.total_required_capacity = capacity;
+    if (date) existing.date = date;
+    if (time) existing.time = time;
+    if (quoted_amount) {
+      existing.requested_suppliers[0].quoted_amount = quoted_amount;
+    }
+    await existing.save();
+
+    // 3) Create new bookings for the rest
+    const newBookings = [];
+    for (let i = 1; i < quantity; i++) {
+      const newBooking = new RequestedBooking({
+        status: "pending",
+        customerId: existing.customerId,
+        type_of_water: existing.type_of_water,
+        capacity: `${capacity} L`,
+        quantity: "1",
+        total_required_capacity: capacity,
+        date: date || existing.date,
+        time: time || existing.time,
+        requested_suppliers: [
+          {
+            time: new Date().toISOString().slice(0, 16).replace("T", " "),
+            status: "pending",
+            supplierId: existing.requested_suppliers[0].supplierId,
+            quoted_amount: quoted_amount || existing.requested_suppliers[0].quoted_amount,
+          },
+        ],
+      });
+      newBookings.push(newBooking);
+    }
+
+    if (newBookings.length > 0) {
+      await RequestedBooking.insertMany(newBookings);
+    }
+
+    return reply.code(200).send({
+      status_code: 200,
+      message: `${quantity} booking(s) created/updated successfully`,
+      updated: existing,
+      newEntries: newBookings,
+    });
+  } catch (err) {
+    console.error("splitBookingForSupplier error:", err);
+    return reply.code(500).send({ status_code: 500, message: "Internal Server Error" });
+  }
+};
+
diff --git a/src/routes/usersRoute.js b/src/routes/usersRoute.js
index d5cbfcfe..99521df2 100644
--- a/src/routes/usersRoute.js
+++ b/src/routes/usersRoute.js
@@ -1412,7 +1412,7 @@ fastify.route({
     handler: userController.updateQuotedAmountForSupplier,
   });
 
-    fastify.route({
+  fastify.route({ 
     method: 'PUT',
     url: '/api/request-booking-status/:_id/supplier/quotestatus',
     schema: {
@@ -1453,7 +1453,7 @@ fastify.route({
   });
 
 
-      fastify.route({
+  fastify.route({
     method: 'PUT',
     url: '/api/request-advance-amount/:_id/supplier/advance',
     schema: {
@@ -1473,7 +1473,7 @@ fastify.route({
         properties: {
           supplierId: { type: 'string' },
            advance_paid: { type: 'number' },       // ✅ fixed
-        advance_ref_number: { type: 'string' }  
+           advance_ref_number: { type: 'string' }  
         },
       
       },
@@ -1494,5 +1494,83 @@ fastify.route({
     handler: userController.updateadvanceForSupplier,
   });
 
+    fastify.route({
+    method: 'PUT',
+    url: '/api/request-advance-amount/:_id/supplier/advance',
+    schema: {
+      description:
+        'Update adavance with reference number for particular supplier by user',
+      tags: ['User'],
+      summary: 'Update adavance with reference number for particular supplier by user',
+      params: {
+        type: 'object',
+        properties: {
+          _id: { type: 'string', description: 'Booking _id' },
+        },
+        required: ['_id'],
+      },
+      body: {
+        type: 'object',
+        properties: {
+          supplierId: { type: 'string' },
+           advance_paid: { type: 'number' },       // ✅ fixed
+           advance_ref_number: { type: 'string' }  
+        },
+      
+      },
+      response: {
+        200: {
+          type: 'object',
+        },
+        400: { type: 'object' },
+        404: { type: 'object' },
+      },
+      security: [
+        {
+          basicAuth: [],
+        },
+      ],
+    },
+    // preHandler: fastify.auth([fastify.authenticate]), // enable if needed
+    handler: userController.updateadvanceForSupplier,
+  });
+
+
+  fastify.route({
+  method: 'POST',
+  url: '/api/request-advance-amount/:id/supplier/split',
+  schema: {
+    description: 'Split a booking into multiple entries based on supplier-edited capacity & quantity',
+    tags: ['User'],
+    summary: 'Split booking by capacity and quantity',
+    params: {
+      type: 'object',
+      properties: {
+        id: { type: 'string', description: 'Booking _id' },
+      },
+      required: ['id'],
+    },
+    body: {
+      type: 'object',
+      properties: {
+        capacity: { type: 'number' },   // supplier wants capacity per booking
+        quantity: { type: 'number' },   // number of bookings
+        date: { type: 'string' },       // optional new date
+        time: { type: 'string' },       // optional new time
+        quoted_amount: { type: 'number' } // optional new quoted amount
+      },
+      required: ['capacity', 'quantity'],
+    },
+    response: {
+      200: { type: 'object' },
+      400: { type: 'object' },
+      404: { type: 'object' },
+    },
+  },
+  handler: userController.splitBookingForSupplier,
+});
+
+  
+
   next();
 };