Trying to initiate a call via the API but keep hitting a 400 error. The docs say the participant address is malformed, but the format looks right to me. Here’s the payload I’m sending:
{
"to": { "phoneNumber": "+15550199" },
"from": { "phoneNumber": "+15550100" },
"type": "call"
}
The numbers are valid. No extra spaces. What am I missing?