I had this issue before the cred are correct but retell says it isn’t, it worked but now it no longer does tool_call_id: 0ee5e24729f81861 {"status":"Transfer call cannot be completed, probably don't have the permission to perform the transfer.. Please inform the customer that the transfer did not go through and offer to try again or assist them directly."} call_9ea129635337d6b4fec83208296 Please assist as many callers aren’t being handled correctly.

The problem is not your credentials. Your call transfer is failing because the system is trying to show the caller’s number, which your phone provider does not support. Solution: Change the transfer Caller ID from “User’s Number” to “Retell Agent’s Number”, then try the call again.