When I try to save my structured output, I get this message and this is what the missing_fields looks like. I have configured the item but it doesn't work? https://cdn.discordapp.com/attachments/1467190386022813901/1467190386417205381/image.png?ex=697f7b07&is=697e2987&hm=85903a83c2bf62fcb797fc4dec0e57104037c8c36ec8be68850fe805b6ea1778& https://cdn.discordapp.com/attachments/1467190386022813901/1467190387964641340/image.png?ex=697f7b07&is=697e2987&hm=b5d1cafdf8ca4ae26a83eb3216453581bf5748888544d86e8ee5a7eb05ea0780&

Hi there, Thank you for your message. Our team is currently out of the office. We operate Monday through Friday, from 9:00 AM to 8:00 PM Pacific Standard Time (PST). We’ll get back to you as soon as possible during our normal business hours. If your message is urgent, please mark it accordingly or include “URGENT” in the subject line, and we’ll do our best to respond promptly. Warm regards, Vapi Customer Support Team

To resolve the "missing item type configuration" error, make sure your

missing_fields

array includes an

items

property that defines the type and allowed values. Here’s the correct JSON Schema snippet:

json
"missing_fields": {
  "type": "array",
  "description": "If complete is true, return an empty array []. If complete is false, list which fields are missing.",
  "items": {
    "type": "string",
    "enum": ["caller name", "phone number", "issue description", "address or area", "job type", "urgency"],
    "description": "One of: caller name, phone number, issue description, address or area, job type, urgency"
  }
}

Update your schema with this structure and try saving again. Source: - [Structured outputs quickstart](https://docs.vapi.ai/assistants/structured-outputs-quickstart)