Chris Gäking
10/09/2025, 8:27 AMChiranjeet Mishra
10/14/2025, 7:29 PMvoice.voiceId field of the Assistant [1](https://docs.vapi.ai/customization/provider-keys)
2. Provider Keys:
- Once you've validated your API through the Dashboard, any voice ID from your provider can be used
- API keys can be added under the "Provider Keys" tab in the Dashboard
Given the issues you're experiencing:
1. Take a backup of your prompt and assistant configuration before making voice changes
2. Try removing and re-adding the voice ID