POSTing to /api/v2/conversations/messages with a quick reply structure returns a 400 Bad Request. The payload is:
{
"address": "guest:123",
"text": "Select an option",
"quickReplies": [
{
"type": "quickReply",
"text": "Option 1"
}
]
}
The error message states ‘Invalid message content’. The documentation implies this structure is correct for the guest endpoint. The Terraform state is clean and the integration is active. What is missing from the payload?