I have been trying to add a phone number to my vapi account using the SIP Integration method. I have successfully added numbers using this method previously, but this has not been working, for the last 5 days. Unable to add new numbers. I have also raisesd the same issue on the general group, a couple of days back. https://cdn.discordapp.com/attachments/1402332639662182491/1402332639893131344/WhatsApp_Image_2025-08-05_at_22.18.22.jpeg?ex=6893878b&is=6892360b&hm=8dc8a9858a51ca9d265c9f54f522a437e8061f4eb5d96c078bce084210304449&

Thanks for sharing the error details. To help troubleshoot, could you confirm if you have recently changed your SIP trunk credentials or provider settings before this issue started (e.g., username, password, SIP server address)? Sources: - [Vapi SIP Trunking Documentation](https://docs.vapi.ai/advanced/sip/sip-trunk) - [Vapi API Reference: Create Phone Number](https://docs.vapi.ai/api-reference/phone-numbers/create?explorer=true)

Try reconfigure your SIP trunk credentials, ensure correct authentication and URI format, use the API without "smsEnabled": true..