diff --git a/src/controllers/installationController.js b/src/controllers/installationController.js
index f6f2cfbc..038b4964 100644
--- a/src/controllers/installationController.js
+++ b/src/controllers/installationController.js
@@ -6224,3 +6224,56 @@ exports.StatusTeamMember =  async (request, reply) => {
     });
   }
 };
+
+
+exports.updateComments = async (req, reply) => {
+  try {
+    const { supportId, customerId, hardwareId } = req.params;
+    const { comments } = req.body;
+
+    if (!supportId || !customerId || !hardwareId) {
+      return reply.code(400).send({ error: "supportId, customerId and hardwareId are required in path params" });
+    }
+
+    if (typeof comments !== 'string') {
+      return reply.code(400).send({ error: "comments must be a string in the request body" });
+    }
+
+    // Verify customerId is valid for the hardwareId by looking into Insensors
+    const sensor = await Insensors.findOne({
+      customerId,
+      $or: [{ hardwareId }, { tankhardwareId: hardwareId }]
+    }).lean();
+
+    if (!sensor) {
+      return reply.code(404).send({ error: "No sensor found with this hardwareId for this customerId" });
+    }
+
+    // Find support record only by supportId (no customerId in Support schema)
+    const supportRecord = await Support.findOne({ supportId });
+
+    if (!supportRecord) {
+      return reply.code(404).send({ error: "Support record not found" });
+    }
+
+    // Check if hardwareId exists in supportRecord issues
+    const issueExists = supportRecord.issues.some(issue =>
+      issue.hardwareId === hardwareId || issue.masterHardwareId === hardwareId
+    );
+
+    if (!issueExists) {
+      return reply.code(404).send({ error: "HardwareId not found in this support record's issues" });
+    }
+
+    // Update the comments field (top-level comments)
+    supportRecord.comments = comments;
+
+    await supportRecord.save();
+
+    return reply.send({ message: "Comments updated successfully", comments });
+
+  } catch (error) {
+    console.error("Error updating comments:", error);
+    return reply.code(500).send({ error: "Internal server error" });
+  }
+};
diff --git a/src/routes/installationRoute.js b/src/routes/installationRoute.js
index 1f2fa40e..a9445011 100644
--- a/src/routes/installationRoute.js
+++ b/src/routes/installationRoute.js
@@ -562,6 +562,30 @@ module.exports = function (fastify, opts, next) {
         },
         handler: installationController.getDisconnectedIssuesBySupportId,
       });
+      fastify.put('/api/updateComments/:supportId/:customerId/:hardwareId', {
+        schema: {
+          description: "Update comments for a support record issue",
+          tags: ["Support"],
+          params: {
+            type: "object",
+            required: ["supportId", "customerId", "hardwareId"],
+            properties: {
+              supportId: { type: "string", minLength: 1 },
+              customerId: { type: "string", minLength: 1 },
+              hardwareId: { type: "string", minLength: 1 }
+            }
+          },
+          body: {
+            type: "object",
+            required: ["comments"],
+            properties: {
+              comments: { type: "string", minLength: 1 }
+            }
+          },
+        
+        },
+        handler: installationController.updateComments
+      });
       fastify.get("/api/getRemoveAllConnectedIsuues/:supportId/:hardwareId", {
         schema: {
           description: "Remove all connected list for Support",