I am using VAPI api for a long time now and never had this issue. Today my workflow suddently stopped working and I have no idea why. I am following the API reference with a Twilio number and now I cant complete API calls If I use the PhoneNumber property, following the json structure demanded, i get a "could not find Twilio number" (Which is working fine, as I have tested already). When I try the PhoneNumberID property, after saving my phone number in the dashboard, I get the "Failed to create calls for the following customers: +XXXXXXXXX" 400 error message. If I do it through the dashboard, it works fine, but suddently the API has abandoned me. Please help

I am experiencing the same on my make.com automations with Vapi making an outbound call. I am getting [400] bad request and the origin is Vapi.

@Bernardo Brakarz @tech It looks like Twilio auth token issue used by VAPI. Or it may be SIP trunking issue if you manually configured a SIP endpoint in Twilio.

Hey, can you share the org_id? You can find it [here](https://dashboard.vapi.ai/org/settings). This will help me get more details about it.