diff --git a/src/constants/enum.ts b/src/constants/enum.ts
index 68d9514..6cae051 100644
--- a/src/constants/enum.ts
+++ b/src/constants/enum.ts
@@ -45,6 +45,8 @@ export const API_ERROR_CODE = {
   RISK_LIMIT_NOT_EXISTS: 30090,
   LEVERAGE_NOT_MODIFIED: 34036,
   SAME_SLTP_MODE: 37002,
+  COPY_TRADE_NOT_OPEN_ORDER: 39426,
+  QTY_EXCEEDS_MAX_LIMIT: 130006,
   ORDER_NOT_FOUND_OR_TOO_LATE_LINEAR: 130010,
   ORDER_COST_NOT_AVAILABLE: 130021,
   CANNOT_SET_LINEAR_TRADING_STOP_FOR_ZERO_POS: 130024,
diff --git a/test/copy-trading/private.read.test.ts b/test/copy-trading/private.read.test.ts
index 3579ddb..fc9a104 100644
--- a/test/copy-trading/private.read.test.ts
+++ b/test/copy-trading/private.read.test.ts
@@ -1,4 +1,5 @@
 import { API_ERROR_CODE, CopyTradingClient } from '../../src';
+import { successResponseObjectV3 } from '../response.util';
 
 describe('Private Copy Trading REST API GET Endpoints', () => {
   const API_KEY = process.env.API_KEY_COM;
@@ -19,20 +20,22 @@ describe('Private Copy Trading REST API GET Endpoints', () => {
   // (just make sure auth works and endpoint doesn't throw)
 
   it('getActiveOrders()', async () => {
-    expect(await api.getActiveOrders()).toMatchObject({
-      retCode: API_ERROR_CODE.INCORRECT_API_KEY_PERMISSIONS,
-    });
+    expect(await api.getActiveOrders()).toMatchObject(
+      successResponseObjectV3()
+    );
   });
 
   it('getPositions()', async () => {
-    expect(await api.getPositions()).toMatchObject({
-      retCode: API_ERROR_CODE.INCORRECT_API_KEY_PERMISSIONS,
-    });
+    expect(await api.getPositions()).toMatchObject(successResponseObjectV3());
   });
 
   it('getBalances()', async () => {
-    expect(await api.getBalances()).toMatchObject({
-      retCode: API_ERROR_CODE.INCORRECT_API_KEY_PERMISSIONS,
+    expect(await api.getBalances()).toMatchObject(successResponseObjectV3());
+  });
+
+  it('closePosition()', async () => {
+    expect(await api.closePosition('SOLUSDT', '1')).toMatchObject({
+      retCode: API_ERROR_CODE.COPY_TRADE_NOT_OPEN_ORDER,
     });
   });
 });
diff --git a/test/linear/private.write.test.ts b/test/linear/private.write.test.ts
index dd5c175..a34189f 100644
--- a/test/linear/private.write.test.ts
+++ b/test/linear/private.write.test.ts
@@ -75,17 +75,16 @@ describe('Private Linear REST API POST Endpoints', () => {
         order_type: 'Limit',
         side: 'Buy',
         symbol,
-        qty: 1,
+        qty: 1000000,
         price: 8100,
         base_price: 8300,
         stop_px: 8150,
         time_in_force: 'GoodTillCancel',
-        order_link_id: 'cus_order_id_1',
         reduce_only: false,
         trigger_by: 'LastPrice',
       })
     ).toMatchObject({
-      ret_code: API_ERROR_CODE.INSUFFICIENT_BALANCE_FOR_ORDER_COST_LINEAR,
+      ret_code: API_ERROR_CODE.QTY_EXCEEDS_MAX_LIMIT,
     });
   });