The steps for Cainiao Post's warehousing system to return information are:

1. Open Cainiao Wrap, enter the My interface, and click Settings.

2. In the settings interface, click on the post pickup notification message settings.

3. After entering the message setting interface of Cainiao Station, you can see that the default notification is Cainiao Wrap notification.

4. Check the SMS settings and click Confirm. You can see that the Cainiao Station SMS notification has been successfully set up.

5. When scanning the package for storage, a page prompt will pop up automatically. Click OK to send.