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This is the agent id:  agent_48fc1760e2785501e6aa8ce638
Please check its urgent. The phone number configured for transfer call seems to be working fine when we tried to transfer call with other agent. Only this agent couldnt call transfer. <@605090813025976344> <@1335889378517585920> <@411757746652839947>

Even though the number supports call transfer, this issue happened

Tried with many numbers, still the same issue happened

Tried cold transfer with all E.164 format and raw input, sip refer and sip invite, nothing worked, all gave the same issue.

Hi <@1400117460576899225> I have reported your issue once I get a update I'll get to you

Hi <@1400117460576899225> use SIP refer and it will work fine

We are using SIP refer only, still that issue occured

Hi <@1400117460576899225>  can you share a call that did use sip refer

<@1405365110880338062> I identified the issue. The older exported workflows did not include the "coldTransferMode": "sip_refer" flag, which caused the call transfer to fail.

To resolve this, I updated the setting from sip_refer to sip_invite and then switched it back to sip_refer. This action generated the missing flag in the workflow. I verified the fix by exporting the workflow again and confirming that the flag is now present. Hence, the call transfer working fine.

You have to make sure you dont miss these during migration