Warm Transfer - End User Guide

In order for Warm Transfer to work, agents must be on a live, conference-based call. The agent cannot be in the middle of another transfer, and the agent must be active (i.e., not on hold.)

Finally, if you're having trouble initiating a Warm Transfer on a project that hasn't been used recently, you may run into an issue with transferring to a TaskQueue that hasn't been used in the last 30 days. Create an inbound Task that routes to that Queue in order to reset it, and try initiating another Warm Transfer.