Here the json body: { "voice": { "provider": "custom-voice", "server": { "url": "https://xxxxx", "timeoutSeconds": 60, "headers": { "Content-Type": "application/json" } }, "cachingEnabled": false, "fallbackPlan": { "voices": [ { "voiceId": "Cole", "provider": "vapi" } ] } } } https://cdn.discordapp.com/attachments/1412406142323392656/1412406564416917654/image.png?ex=68b82d9e&is=68b6dc1e&hm=6898db73a6fc15632a8f07ea77e7d6d0be100250263ccfbb96e6616e123f35eb&

Once you publish changes through the API for any custom setting such as

custom-voice

,

custom-transcriber

, or

custom-llm

you will not be able to edit your assistant on the dashboard. Please make changes through the API for your assistant and let us know if you encounter any other issues.

When i try to talk to the assistant I am seeign something similar like this https://cdn.discordapp.com/attachments/1412406142323392656/1413142407175868446/Screenshot_2025-09-04_at_4.15.00_PM.png?ex=68badaec&is=68b9896c&hm=ee4632e897fd2752d16806b6e65ea6c273ad038ebce7f2bc55f2d5579901cfc1&

Could you please send the Assistant ID?

yes.this is my assistant ID 770b3a4d-ab53-4d65-8ec7-cf81df0037b0

There might be an issue with the fallback configuration of your assistant. Please remove the fallback settings for now and perform a test call to see if you still encounter the error