Currently I am doing a demo advanced warm transfer Test with myself. I walk through my flow and warm tans I click over to have a separate convo with the transfer agent. She attempts to bridge me..to me 🙂 This was working seamlessly allowing me to demos the agent capabilities from a single device. However recently - the agent attempt to Handoff the call and the call drops the other end. I want to make sure that there hasnt been anything new introduced that would confirm this type of behavior. I have checked my prompt back and forth and cant seem to find why this is happening. Can someone assist with this?

Yes @Mighty this behavior is expected and not a prompt issue. Advanced warm transfer is not supported for looping a call back to the same device or same call leg anymore. Recent Retell updates tightened human-answer detection and call-leg validation, so when the agent tries to hand off “you to you,” the second leg is treated as invalid and gets dropped. This is why it used to work for demos and now fails. For reliable testing, you must use a separate phone number or device for the transfer target.

Thank You for confirming! @Shehroze -Support @Retell