Transfer Call Failing With some Numbers working wi...
# ❓・bug-reportl
Leadfunnel
02/09/2026, 5:36 PMIs there a problem with transfer calls?
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Shehroze -Support @Retell
02/09/2026, 5:38 PMHi @Leadfunnel
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Leadfunnel
02/09/2026, 5:38 PMhello
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Shehroze -Support @Retell
02/09/2026, 5:38 PMCan you send call ids
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Leadfunnel
02/09/2026, 5:40 PMcall_dbac0bdb17f2a99a21545b9bc24
call_31ea82b14d6f57e134275e76bea
Leadfunnel
02/09/2026, 5:40 PMcall_06a14fa011b21f06191a3c8e0f7
Leadfunnel
02/09/2026, 5:41 PMthen this one works call_ba7e4f329ddc6e0db00bf7cdc17
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Shehroze -Support @Retell
02/09/2026, 5:42 PMOk I report this issue to team to look and get back
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Leadfunnel
02/09/2026, 5:42 PMok i dmed you please reply there
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Shehroze -Support @Retell
02/11/2026, 1:51 PMHi @Leadfunnel
Here is a error I got:
Error transferring call, SIP status code: 403 SIP error category: telephony_provider_permission_denied Error: twirp error unknown: unexpected status from INVITE response: sip status: 403: Caller ID is unauthorized. A Valid Caller ID is either a DID you have purchased from Twilio or a verified Caller ID.
Seems to be a cold transfer:
The configuration between those calls are the same but some calls failed. That is very weird.
Currently team is looking into the issue further