You can add as many extensions to your USSD Code as you wish for free.
If you purchased *714*23#, you are at liberty to add extra sub-strings for free (Eg *714*23*1). This allows you to map such custom codes to other applications.
- Go to USSD.
- Click on the three dots at the far right corner.
- Click on Add Extension.
- A Custom Extension modal appears on the screen.
- Enter your custom extension number (eg. 33) and Click on Add.
You can then proceed to map your USSD custom code to your application.