Studio automatically saves your valid flow changes, but allows both "Production" and "Draft" versions of flows. This guide explains how to check the status of a Studio flow, as well as how to enable numbers for testing.

Studio flow status

To check a flow’s production status, look at the red Publish button in the upper right of the screen -

• If the button says Published and is grayed out, then this is the production version.
   
• If the button says Publish and is red, this is a draft. Hover over the Publish button for a link to the production version of the flow.
   
  

Testing draft version flow changes

When making changes to a flow, clicking the Save button will introduce these changes into Draft mode. Draft flows can be tested - without making any changes in production - by pre-approving specific phone numbers for testing. Here’s how to add test numbers:

1. From the flow, click the Trigger widget.
    
2. From the Config tab, add the desired testing phone numbers to the TEST USERS field. Multiple phone numbers can be added if separated by commas.
    
3. Click Save.

Any phone number from the TEST USERS field that calls in to a Twilio line configured to use this flow will now be directed to the draft version.