Exact same agent configuration. Callid (this one doesn't work): d7ca3d94-4477-48a9-93f9-fab45d466f97 Callid (this one works): 5ff61bc8-4949-4843-8387-a90c736e0c11 No modication in agent at all.

Suggestion: Since your

backgroundSound

URL and agent configuration are unchanged but the feature fails for one call and not another, try re-uploading or refreshing the audio file at the URL to rule out temporary hosting or access issues. If the problem persists, contact Vapi support with both call IDs for further investigation, as the documentation does not list known issues for this feature ([changelog reference](https://docs.vapi.ai/changelog/2025/3/22)). Source: - [Changelog March 22, 2025 Customizable Background Sound](https://docs.vapi.ai/changelog/2025/3/22)

I see you are using a custom backgroundSound, can you send me some more call_id? https://cdn.discordapp.com/attachments/1374284098494795776/1374493929852108800/image.png?ex=682e40b9&is=682cef39&hm=bade86c492c09a96eca26684794f7fbee23f7dd0932f2ccf60941a7c41762bed&

a3306d03-473e-47f1-9453-e4a59b54c9cc here you go! just did this one today

Weird, let me check with the team and get back to you.

thanks!

Suggestion: Since your

backgroundSound

URL and agent configuration are unchanged but the feature fails inconsistently, try re-uploading or refreshing the audio file at the URL to rule out temporary hosting or access issues. If the problem continues, contact Vapi support and provide the affected call IDs for further investigation, as there are no known issues for this feature in the documentation. Reference: [Changelog March 22, 2025 – Customizable Background Sound](https://docs.vapi.ai/changelog/2025/3/22) Source: - [Changelog March 22, 2025 – Customizable Background Sound](https://docs.vapi.ai/changelog/2025/3/22)