1. Firstly, you need to log in to the store's control panel. 
  2. Find Advanced Setting and click it.
  3. Then, click on the API Accounts which in the last selection of advanced setting.
  4. After that, click on the Create API account. 

  5. Enter a Name for the integration corresponding to your account. Copy the API Path and insert it into the appropriate field in Migration Wizard.

  6. Then, under the OAuth Scopes specify the API resources and permissions to which your app/integration requires access. 

    Ensure Products scope set to Modify


  7. After making the changes, click on save.

  8. Copy your API Credentials from the pop-up shown below.