# WhatsApp Flows Error: 100 Invalid Flow JSON data_api_version | Complete Troubleshooting Guide
Author: Prashant Jangid
Author URL: https://www.heltar.com/blogs/author/prashant-jangid
Published: 2025-03-03
Category: Troubleshoot
Category URL: https://www.heltar.com/blogs/category/troubleshoot
Tags: WhatsApp API Error
Tag URLs: WhatsApp API Error (https://www.heltar.com/blogs/tag/whatsapp-api-error)
URL: https://www.heltar.com/blogs/whatsapp-flows-error-100-invalid-flow-json-dataapiversion-or-complete-troubleshooting-guide-cm7syqr6s000vcf4fp4nst927

When working with WhatsApp Flows, you might encounter the error:

"100 Invalid Flow JSON data\_api\_version"

This error occurs when the Data API version specified in your API call is incorrect, missing, or outdated. Below, we’ll break down why this happens and how to fix it.

## Why This Error Occurs?

1. Incorrect Version Format – A typo or formatting issue in the version string.

2. Missing Version – The data\_api\_version field is left blank.

3. Deprecated Version – The version specified is outdated and no longer supported.


## How to Fix It?

### 1\. Check for Typing Errors

Ensure that you have entered the version number correctly. WhatsApp API versions follow a format like v17.0, v18.0, etc. Verify the syntax in your API request.

### 2\. Specify a Version (If Missing)

If your request does not include a data\_api\_version, explicitly set it to the latest supported version.

Example:

```
{
  "data_api_version": "v18.0",
  "flow": { ... }
}
```

### 3\. Use a Supported API Version

If the version you’re using is no longer active, update it to the latest supported version.

- Check the official WhatsApp API [Changelog](https://developers.facebook.com/docs/whatsapp/on-premises/changelog) for the latest versions.

- Refer to WhatsApp’s [Versioning Reference](https://developers.facebook.com/docs/whatsapp/flows/guides/versioning) to understand version lifecycles.


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


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