# WhatsApp API Error MISSING_REQUIRED_TYPE_PROPERTY in WhatsApp Flows JSON
Author: Prashant Jangid
Author URL: https://www.heltar.com/blogs/author/prashant-jangid
Published: 2025-03-31
Category: Troubleshoot
Category URL: https://www.heltar.com/blogs/category/troubleshoot
Tags: WhatsApp Flows Error
Tag URLs: WhatsApp Flows Error (https://www.heltar.com/blogs/tag/whatsapp-flows-error)
URL: https://www.heltar.com/blogs/whatsapp-api-error-missingrequiredtypeproperty-in-whatsapp-flows-json-cm8wv4w0r009i4w8iz6atrs0o

If you're working with WhatsApp Flows you might come across the error: **MISSING\_REQUIRED\_TYPE\_PROPERTY**

**Required property '${propertyName}' is missing.**

This means the system expects a specific property—usually "type"—to be present, but it's missing in your JSON.

Let’s break it down.

What Does This Error Mean?

When a component or element is defined in a JSON schema, certain properties are required to identify how the system should render or process it.

One of the most common required fields is "type", which tells the system what kind of component you're working with—like a button, image, or text block.

## Example of the Problem

Here’s a broken JSON snippet that throws the error:

```
{
  "screens": [
    {
      "id": "FIRST",
      "layout": {
        "children": [
          {
            "text": "Description"
          }
        ]
      }
    }
  ]
}
```

**What’s wrong?**

The child element has "text" but no "type".

**The Fix: Add the Missing type Property**

To resolve the error, simply define the type of the element:

```
{
  "screens": [
    {
      "id": "FIRST",
      "layout": {
        "children": [
          {
            "type": "text",
            "text": "Description"
          }
        ]
      }
    }
  ]
}
```

Now the system knows that this child is a text element, and it can render it correctly.

## Common Required Properties

Depending on your schema or platform, these are some frequently required fields:

Property

Purpose

type

Defines the component type (e.g., text, button, image)

id

Identifies the element uniquely

text

Content of a text-based component

action

Describes what happens on interaction

Make sure to refer to the schema documentation for required fields.

For more troubleshooting insights related to WhatsApp Business API, check out [heltar.com/blogs](http://heltar.com/blogs).


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