Hi, I've been building vapi infastructure for a client that uses aircall. Sometimes the transfers work fine, other times the tool call shows as succesful but nothing is coming through to aircall. Here's how my dynamic transfer tool is setup: { "model": { "provider": "openai", "model": "gpt-4o-mini", "tools": [ { "type": "transferCall", "destinations": [ { "type": "number", "number": "+441924601865", "transferPlan": { "mode": "warm-transfer-wait-for-operator-to-speak-first-and-then-say-message", "message": "Hey, it's Charlie the AI assistant. I have {{full_name}} on the phone from {{post_code}} looking for a gas boiler quote." } } ], "function": { "name": "transferCall", "description": "Use this function to transfer the call. Use it when you’ve mentioned transferring the call to sales.", "parameters": { "type": "object", "properties": { "destination": { "type": "string", "enum": [ "+441924601865" ], "description": "The destination to transfer the call to." } }, "required": [ "destination" ] } }, "messages": [ { "type": "request-start", "content": "Thanks for confirming, I'm going to transfer your call to our boiler experts to give you a quote. Please hold for a second.", "conditions": [ { "param": "destination", "operator": "eq", "value": "+441924601865" } ] } ] } ] } } Here is one of the call logs for a transfer that never appeared in aircall: 6a9003ce-8b1a-4937-8451-7bcf36e55f63

My team is also encountering the same issue. Would like to bump this up for some sort of resolution if possible!

🔵 11:49:47:210 Transferring Twilio Call...TwiML:<Response><Dial><Number url="[https://api.vapi.ai/twilio/twiml?verb=gather&amp;text=Hey%2C+it%27s+James+the+AI+assistant.+I+have+%7B%7Bfull_name%7D%7D+on+the+phone+from+%7B%7Bpost_code%7D%7D+looking+for+a+solar+quote.">+4474xxxx106</Number></Dial></Response>](https://api.vapi.ai/twilio/twiml?verb=gather&amp;text=Hey%2C+it%27s+James+the+AI+assistant.+I+have+%7B%7Bfull_name%7D%7D+on+the+phone+from+%7B%7Bpost_code%7D%7D+looking+for+a+solar+quote.\">+447401280106) 🔵 11:49:47:352 Live Call Manager Ending...(assistant-forwarded-call)

This is the problem, nothing on aircall side to even find a failed log. The customer did actually call back after and said the call was just disconnected when transferring

@Alex can you share the Twilio logs so I can analyze what went wrong? Twilio Call SID: CAc7afa68e7ff27d23e7708020c2c91013