diff --git a/package.json b/package.json
index 2936c50..60f3eca 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.17.35",
+  "version": "0.17.36",
   "description": "Orion Protocol SDK",
   "main": "./lib/esm/index.js",
   "module": "./lib/esm/index.js",
diff --git a/src/__tests__/orionAggregator.test.ts b/src/__tests__/orionAggregator.test.ts
index 9384d49..c09a6c6 100644
--- a/src/__tests__/orionAggregator.test.ts
+++ b/src/__tests__/orionAggregator.test.ts
@@ -1,7 +1,7 @@
 import Orion from '../Orion';
 
 describe('Orion Aggregator', () => {
-  test('Handle error', async () => {
+  test('Handle error aus', async () => {
     const orion = new Orion('testing');
     const bscUnit = orion.getUnit('bsc')
 
@@ -27,4 +27,30 @@ describe('Orion Aggregator', () => {
       })
     });
   });
+
+  test('Handle error aobus', async () => {
+    const orion = new Orion('testing');
+    const bscUnit = orion.getUnit('bsc')
+
+    let subId: string;
+
+    await new Promise((resolve, reject) => {
+      const timeout = setTimeout(() => {
+        bscUnit.orionAggregator.ws.unsubscribe(subId);
+        bscUnit.orionAggregator.ws.destroy()
+        reject(new Error('Timeout'));
+      }, 10000);
+      const payload = 'BTCUSDF';
+      subId = bscUnit.orionAggregator.ws.subscribe('aobus', {
+        payload,
+        callback: () => null,
+        errorCb: (message) => {
+          console.log(message);
+          clearTimeout(timeout);
+          bscUnit.orionAggregator.ws.destroy()
+          resolve(true);
+        }
+      })
+    });
+  });
 });
diff --git a/src/services/OrionAggregator/ws/index.ts b/src/services/OrionAggregator/ws/index.ts
index ad56f2b..be45636 100644
--- a/src/services/OrionAggregator/ws/index.ts
+++ b/src/services/OrionAggregator/ws/index.ts
@@ -370,13 +370,15 @@ class OrionAggregatorWS {
           // Get subscription error callback
           // 2. Find subscription by id
           // 3. Call onError callback
-
-          const subType = objectKeys(this.subscriptions).find((st) => this.subscriptions[st]?.[err.id]);
-          if (subType === undefined) throw new Error('OrionAggregatorWS: cannot find subscription type by id');
-          const sub = this.subscriptions[subType]?.[err.id];
-          if (sub === undefined) throw new Error('OrionAggregatorWS: cannot find subscription by id');
-          if ('errorCb' in sub) {
-            sub.errorCb(err.m);
+          const { id } = err;
+          if (id !== undefined) {
+            const subType = objectKeys(this.subscriptions).find((st) => this.subscriptions[st]?.[id]);
+            if (subType === undefined) throw new Error('OrionAggregatorWS: cannot find subscription type by id');
+            const sub = this.subscriptions[subType]?.[id];
+            if (sub === undefined) throw new Error('OrionAggregatorWS: cannot find subscription by id');
+            if ('errorCb' in sub) {
+              sub.errorCb(err.m);
+            }
           }
           this.onError?.(err.m);
         }
diff --git a/src/services/OrionAggregator/ws/schemas/errorSchema.ts b/src/services/OrionAggregator/ws/schemas/errorSchema.ts
index a9ec03b..370d9fa 100644
--- a/src/services/OrionAggregator/ws/schemas/errorSchema.ts
+++ b/src/services/OrionAggregator/ws/schemas/errorSchema.ts
@@ -5,7 +5,7 @@ import baseMessageSchema from './baseMessageSchema';
 const errorSchema = baseMessageSchema.extend({
   T: z.literal(MessageType.ERROR),
   c: z.number().int(), // code
-  id: z.string(), // subscription id
+  id: z.string().optional(), // subscription id
   m: z.string(), // error message,
 });