# WhatsApp API Error INVALID_PROPERTY_TYPE in Flow 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-invalidpropertytype-in-flow-json-cm8wullh7009e4w8iy5c8ns2d

The **INVALID\_PROPERTY\_TYPE** error occurs when a property in your Flow JSON has a value of an unexpected type. This means that the data type you’ve used doesn’t match the expected type for that property.

### Error Message Example

INVALID\_PROPERTY\_TYPE

_Expected property (errorPath) to be of type (expectedType), but found (actualType)._

Invalid type of value found for a valid property type.

### Understanding the Issue

Let’s consider an example where this error occurs:

```
{
  "type": "TextArea",
  "label": "Your input",
  "enabled": "yes"
}
```

Here, the enabled property is expected to be a boolean (true or false), but the provided value is a string ("yes"). This mismatch causes the INVALID\_PROPERTY\_TYPE error.

### Common Causes of This Error

1. **Using Strings Instead of Booleans or Numbers:**


   - Incorrect: "enabled": "yes"

   - Correct: "enabled": true


3. **Providing Arrays Instead of Objects:** Ensure that if a property expects an object ({}), you do not provide an array (\[\]).

4. **Mismatching Data Types in Properties:** Check the documentation for expected types and ensure values match.


### How to Fix It?

- **Identify the Property:** Look at the error message to find which property has an invalid type.

- **Check the Expected Type:** Refer to the Flow JSON documentation to see what data type is required.

- **Correct the Value:** Update the property with the correct type.


### Fixed JSON Example

```
{
  "type": "TextArea",
  "label": "Your input",
  "enabled": true
}
```

Now, the enabled property is a boolean (true), fixing the issue.

_**Tip:**_ _Use JSON validation tools to catch errors early and always refer to official documentation before adding new properties._

By following these steps, you can easily troubleshoot and fix the INVALID\_PROPERTY\_TYPE error in Flow JSON.

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


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