Dear VAPI Support Team, I'm Alex from Hogarsolar, ID: 398244ae-2f04-4764-8f10-1eec01de4284 I hope this message finds you well. I'm experiencing difficulties reconnecting our Vonage phone numbers to VAPI after accidentally deleting our Vonage application. Issue Summary: Previously had two Vonage numbers (34854852175 & 34854852326) working correctly with VAPI Accidentally deleted the Vonage application from our Vonage dashboard Created a new Vonage application with proper Voice capabilities enabled Unable to import numbers back into VAPI - receiving "The provided credentials are not valid" error Current Configuration: Both numbers show "Not linked" status in Vonage dashboard Application has Voice capabilities enabled with proper webhooks https://cdn.discordapp.com/attachments/1418202101850439742/1418202102030799009/Captura_de_pantalla_2025-09-18_a_las_13.46.03.png?ex=68cd4322&is=68cbf1a2&hm=8f46ec3a9f93d17d6eac7094f7dfcfe449c90c5c80e1e3aae3c28a9fdd7eb8aa& https://cdn.discordapp.com/attachments/1418202101850439742/1418202102454550629/Captura_de_pantalla_2025-09-18_a_las_13.48.13.png?ex=68cd4322&is=68cbf1a2&hm=78c893cd0059273144b9f79483adf86e67f9a370bb4abcf3da915b777eaf8de3&

Suggestion: When importing your Vonage numbers into Vapi, ensure your API request or dashboard action does not include the following properties:

orgId

,

createdAt

,

updatedAt

, or

vonageApplicationId

. These fields should be omitted from your payload, as their presence will trigger a "property ... should not exist" error. Example (JSON payload for updating/importing a number):

json
{
  "apiKey": "your_vonage_api_key",
  "apiSecret": "your_vonage_api_secret",
  "applicationId": "your_vonage_application_id"
  // Do NOT include orgId, createdAt, updatedAt, vonageApplicationId
}

Try removing those fields and re-importing your numbers. [See API reference for details](https://docs.vapi.ai/api-reference/phone-numbers/update) Source: - [Update Phone Number](https://docs.vapi.ai/api-reference/phone-numbers/update)

I fixed that via API