Urgent issue with call transfer marked as successful but not actually executed

Hello Retell Support,

I am experiencing a serious issue with the call transfer function, and I need urgent help investigating and resolving it.

In multiple calls, when the agent was supposed to transfer the customer’s call, the transfer did not actually happen, even though the result was shown as “successful” in the system.

More specifically:

  • the customers called as usual,

  • the agent reached the point where the transfer call function should have been triggered,

  • the system marked the transfer as successful,

  • but the call was not transferred in reality,

  • and in these cases the destination phone number was not properly written or visible in the transfer action.

This caused major operational problems for us. Yesterday, this issue affected approximately 4 to 5 calls that should have been transferred, but were not. As a consequence, customers were not connected correctly, service failed in important moments, and this negatively impacted our performance and trust with clients.

This is a critical problem because from our side it appears that the transfer completed successfully, while in practice it did not happen. That makes it very difficult to detect and prevent in real time.

I would like your help understanding:

  1. Why the transfer is being reported as “successful” even when the call is not actually transferred

  2. Why the destination number is not being correctly written/passed during the transfer action

  3. Whether this is related to the transfer setup, SIP/infrastructure behavior, or a platform-side issue

  4. How we can fix this permanently and make sure failed transfers are clearly logged as failed, not successful

Please also let me know what logs, call IDs, or technical details you need from my side so we can troubleshoot this quickly.

This issue has already caused significant damage in live customer interactions, so I would appreciate urgent support on this.

Thank you for reaching out to Retell AI Support. We’ve received your ticket and our team will respond within 8 hours.

Hello @matteventu7

Can you share the call id?

call_83b2594a8255cf6dd9203afd83e
call_f4366b94930f59e3fa2c6fbcb9d

Also other calls during that hours

Same issue here today: call_229dfe9883cae9db4e42a6a5662

It seems that the error happens with local transferred numbers only, not mobile numbers.

Hello @matteventu7

I’ve checked with the team, and indeed, there was a small issue in the UI not showing the Transferred number, but the transfer functionality itself is working fine.

Still the same issue with UI in all my transfer calls

Yes, the team will push a fix for it