call id: 86ed1024-75b6-4291-9114-31ed839540b1 I try to do a warm transfer with summary (custom prompt) to fetch specific call details such as call number, but it does not work and it performs blind transfer

Thank you for sharing the issue. To help diagnose why your warm transfer with summary is performing a blind transfer, could you please confirm if your

transferPlan.mode

is set to "warm-transfer-with-summary" and if you have defined a

summaryPlan

in your configuration? Source: - [Vapi documentation: Warm Transfer with Summary](https://docs.vapi.ai/call-forwarding)

Yes both of these things have been done

Thread reviewed and resolved.

019c27a4-4725-766c-9525-a0867fd507bd Still the same issue

The warm transfer isn't working because sipVerb: "refer" in your config forces a cold transfer, regardless of the transfer mode setting. What happened: Your call (019c27a4-4725-766c-9525-a0867fd507bd) executed a cold transfer instead of warm transfer with summary. Why: When sipVerb: "refer" is set, it overrides warm-transfer-say-summary and forces a SIP REFER (cold transfer). The summary generation also failed because the LLM received empty messages—but this is secondary since the cold transfer would happen anyway. Fix: • Remove sipVerb: "refer" from your transfer tool configuration • Keep transferMode: "warm-transfer-say-summary" as-is • If you're using a custom prompt for the summary, ensure the conversation has messages before the transfer triggers After removing the sipVerb setting, the system will: 1. Generate the call summary using your custom prompt 2. Dial the destination 3. Play the summary to the receiving agent 4. Connect the caller Let me know if you need help locating where sipVerb is configured in your setup, or if the issue persists after removing it.