When I tested my Assistant, it suddenly switched back to the GrowthPartners Qualification template (another language, another context), which was completely cleared and 15 tests already passed without such an issue. This call was https://dashboard.vapi.ai/calls/019a12bd-a2fa-7ffa-b7fc-2e3ae4901c3e

Thank you for sharing the details. To help diagnose why your Assistant switched back to the GrowthPartners Qualification template during that call, could you confirm if you are using a server endpoint (e.g., for dynamic assistant selection or personalization) to provide assistant configurations at call time? This will help determine if the issue might be related to server responses or static configuration. Sources: - [Debugging voice agents](https://docs.vapi.ai/debugging) - [Personalization with user information](https://docs.vapi.ai/assistants/personalization) - [Transient vs permanent configurations](https://docs.vapi.ai/assistants/concepts/transient-vs-permanent-configurations)

I used the dashboard, after clicked on Phone Number, and selected the assistant from the dropdown on the bottom (Outbound section)

The voicemail message you’re hearing is currently the default setting. To fix this, you’ll need to update the assistant property

voicemailMessage

with your custom message. The best way to update it is via the API using a

PATCH

request to the

/assistant

endpoint. We have a step-by-step guide in our documentation that shows exactly how to do this: 👉 [Update Assistant API Reference](https://docs.vapi.ai/api-reference/assistants/update?explorer=true) Once you set the custom

voicemailMessage

, it should override the default behavior. Let us know if you run into any trouble applying the update!