diff --git a/src/controllers/installationController.js b/src/controllers/installationController.js
index 287c211c..e7bea7b2 100644
--- a/src/controllers/installationController.js
+++ b/src/controllers/installationController.js
@@ -1541,33 +1541,126 @@ exports.masterConnectedSlaveList = async (req, reply) => {
     };
 
     // Step 7: Process each slave
+    // const processedSlaves = await Promise.all(slaveTanks.map(async slave => {
+    //   const originalHardwareId = slave.connected_to;
+    //   const tankHardwareId = slave.tankhardwareId;
+    //   console.log("originalHardwareId",originalHardwareId)
+    //         console.log("tankHardwareId",tankHardwareId)
+
+    //   const finalHardwareId = tankHardwareId || originalHardwareId;
+
+    //   const matchingTankData = latestIotData?.tanks?.find(t =>
+    //     t.tankhardwareId === finalHardwareId || t.hardwareId === finalHardwareId
+    //   );
+
+    //   // Fetch slave's tank metadata
+    //   const slaveTankMeta = await Tank.findOne(
+    //    // { hardwareId: slave.connected_to },
+    //     {
+    //   $or: [
+    //     { hardwareId: slave.connected_to },
+    //     { hardwareId: slave.tankhardwareId }  // assuming tankhardwareId is saved as hardwareId in Tank collection
+    //   ]
+    // },
+    //     { height: 1, length: 1, width: 1 }
+    //   ).lean();
+    //   console.log("slaveTankMeta",slaveTankMeta)
+    //   return {
+    //     ...slave,
+    //     isMaster: false,
+    //     hardwareId: finalHardwareId,
+    //     tankHeight: matchingTankData?.tankHeight ?? null,
+    //     typeOfWater: masterTypeOfWater === 'bore' ? 'bore' : (slave.typeOfWater || null),
+    //     height: slaveTankMeta?.height || null,
+    //     length: slaveTankMeta?.length || null,
+    //     width: slaveTankMeta?.width || null
+    //   };
+    // }));
+
     const processedSlaves = await Promise.all(slaveTanks.map(async slave => {
-      const originalHardwareId = slave.hardwareId;
-      const tankHardwareId = slave.tankhardwareId;
+  // const finalHardwareId = slave.tankhardwareId || slave.connected_to;
+  //     console.log("finalHardwareId",finalHardwareId)
+  // // Find matching tank meta by hardwareId in Tank collection
+  // const slaveTankMeta = await Tank.findOne(
+  //   { hardwareId: finalHardwareId },
+  //   { height: 1, length: 1, width: 1 }
+  // ).lean();
+//   const finalHardwareId = slave.tankhardwareId || slave.connected_to;
+
+// // Try match by tankhardwareId first
+// let slaveTankMeta = await Tank.findOne(
+//   { tankhardwareId: slave.tankhardwareId },
+//   { height: 1, length: 1, width: 1 }
+// ).lean();
+
+// // If not found, fallback to match by hardwareId
+// if (!slaveTankMeta && slave.connected_to) {
+//   slaveTankMeta = await Tank.findOne(
+//     { hardwareId: slave.connected_to },
+//     { height: 1, length: 1, width: 1 }
+//   ).lean();
+// }
 
-      const finalHardwareId = tankHardwareId || originalHardwareId;
+//       console.log("slaveTankMeta",slaveTankMeta)
 
-      const matchingTankData = latestIotData?.tanks?.find(t =>
-        t.tankhardwareId === finalHardwareId || t.hardwareId === finalHardwareId
-      );
+//   // Find matching IoT tank data (for tankHeight)
+//   const matchingTankData = latestIotData?.tanks?.find(t =>
+//     t.tankhardwareId === finalHardwareId || t.connected_to === finalHardwareId
+//   );
+//       console.log("matchingTankData",matchingTankData)
+
+//   return {
+//     ...slave,
+//     isMaster: false,
+//     hardwareId: finalHardwareId,
+//     tankHeight: matchingTankData?.tankHeight ?? null,
+//     typeOfWater: masterTypeOfWater === 'bore' ? 'bore' : (slave.typeOfWater || null),
+//     height: slaveTankMeta?.height || null,
+//     length: slaveTankMeta?.length || null,
+//     width: slaveTankMeta?.width || null
+//   };
+const finalHardwareId = slave.tankhardwareId || slave.connected_to;
 
-      // Fetch slave's tank metadata
-      const slaveTankMeta = await Tank.findOne(
-        { hardwareId: slave.hardwareId },
-        { height: 1, length: 1, width: 1 }
-      ).lean();
+// Try match by tankhardwareId first, filtered by customerId
+let slaveTankMeta = await Tank.findOne(
+  {
+    tankhardwareId: slave.tankhardwareId,
+    customerId: customerId
+  },
+  { height: 1, length: 1, width: 1 }
+).lean();
+
+// If not found, fallback to match by hardwareId + customerId
+if (!slaveTankMeta && slave.connected_to) {
+  slaveTankMeta = await Tank.findOne(
+    {
+      hardwareId: slave.connected_to,
+      customerId: customerId
+    },
+    { height: 1, length: 1, width: 1 }
+  ).lean();
+}
+
+console.log("slaveTankMeta", slaveTankMeta);
+
+// Find matching IoT tank data (for tankHeight)
+const matchingTankData = latestIotData?.tanks?.find(t =>
+  t.tankhardwareId === finalHardwareId || t.connected_to === finalHardwareId
+);
+
+return {
+  ...slave,
+  isMaster: false,
+  hardwareId: finalHardwareId,
+  tankHeight: matchingTankData?.tankHeight ?? null,
+  typeOfWater: masterTypeOfWater === 'bore' ? 'bore' : (slave.typeOfWater || null),
+  height: slaveTankMeta?.height || null,
+  length: slaveTankMeta?.length || null,
+  width: slaveTankMeta?.width || null
+};
+
+}));
 
-      return {
-        ...slave,
-        isMaster: false,
-        hardwareId: finalHardwareId,
-        tankHeight: matchingTankData?.tankHeight ?? null,
-        typeOfWater: masterTypeOfWater === 'bore' ? 'bore' : (slave.typeOfWater || null),
-        height: slaveTankMeta?.height || null,
-        length: slaveTankMeta?.length || null,
-        width: slaveTankMeta?.width || null
-      };
-    }));
 
     // Step 8: Combine into one array
     const combinedData = [masterResponse, ...processedSlaves];