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

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

  3. 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.

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