diff --git a/assembly/__tests__/vm-mock.spec.ts b/assembly/__tests__/vm-mock.spec.ts
index 89ae8ea6..a0745d0a 100644
--- a/assembly/__tests__/vm-mock.spec.ts
+++ b/assembly/__tests__/vm-mock.spec.ts
@@ -10,10 +10,12 @@ import {
   keccak256,
   isEvmSignatureValid,
   evmGetPubkeyFromSignature,
+  getOriginOperationId,
 } from '../std';
 import { changeCallStack, resetStorage } from '../vm-mock/storage';
 import {
   mockAdminContext,
+  mockOriginOperationId,
   mockSetChainId,
   setDeployContext,
   setLocalContext,
@@ -305,3 +307,21 @@ describe('Testing mocked Chain id', () => {
     expect(env.chainId()).toBe(9_000_000);
   });
 });
+
+describe('Testing mocked origin operation id', () => {
+  const mockedOpId = 'imAniceOpId';
+  beforeEach(() => {
+    mockOriginOperationId(mockedOpId);
+  });
+
+  it('operation Id is mocked', () => {
+    const opId = getOriginOperationId();
+    expect(opId).toBe(mockedOpId);
+  });
+
+  it('operation Id mock is unset', () => {
+    mockOriginOperationId('');
+    const opId = getOriginOperationId();
+    expect(opId).not.toBe(mockedOpId);
+  });
+});
diff --git a/assembly/vm-mock/env.ts b/assembly/vm-mock/env.ts
index 00d78983..cd905501 100644
--- a/assembly/vm-mock/env.ts
+++ b/assembly/vm-mock/env.ts
@@ -168,3 +168,24 @@ export declare function setLocalContext(address?: string): void;
 
 @external("massa", "assembly_script_set_chain_id")
 export declare function mockSetChainId(value: number): void;
+
+/**
+ * Set mock for origin operation Id.
+ *
+ * @remarks
+ * This function is used to mock the origin operation Id for test purpose.
+ * If an empty string is passed, the origin operation Id will be reset to the default value (random generated).
+ * Don't forget to reset the mock after the test.
+ *
+ * @example
+ * ```typescript
+ * test('mock origin opId', () => {
+ *   const opId = 123;
+ *   mockOriginOperationId(opId);
+ *   const res = getOriginOperationId()();
+ *   expect(res).toBe(opId);
+ * });
+ * ```
+ */
+@external("massa", "assembly_script_set_origin_operation_id")
+export declare function mockOriginOperationId(opId: string): void;
diff --git a/vm-mock/vm.js b/vm-mock/vm.js
index 71630acd..1bfcc079 100644
--- a/vm-mock/vm.js
+++ b/vm-mock/vm.js
@@ -10,6 +10,8 @@ import sha3 from 'js-sha3';
 let callerAddress = 'AU12UBnqTHDQALpocVBnkPNy7y5CndUJQTLutaVDDFgMJcq5kQiKq';
 let contractAddress = 'AS12BqZEQ6sByhRLyEuf0YbQmcF2PsDdkNNG1akBJu9XcjZA1eT';
 
+let mockedOriginOpId = '';
+
 /**
  * return a random string
  *
@@ -801,7 +803,15 @@ export default function createMockedABI(
         );
       },
 
+      assembly_script_set_origin_operation_id(dataPtr) {
+        const opId = ptrToString(dataPtr);
+        mockedOriginOpId = opId;
+      },
+
       assembly_script_get_origin_operation_id() {
+        if(mockedOriginOpId !== '') {
+          return newString(mockedOriginOpId);
+        }
         return newString(generateRandOpId());
       },