---
page_source: https://juspay.io/in/docs/hyper-checkout/android/resources/clickstream-event--input-validation
page_title: Clickstream Event - Input Validation
---


# 




# Clickstream Event - Input Validation



**Event type:** form_input_validation

**When:** This is emitted whenever user enters incorrect form data (like invalid card number)

![Image](https://dth95m2xtyv8v.cloudfront.net/tesseract/assets/hyper-checkout/ezgif.com-video-to-gif%20(1).gif)
*Event: form_input_validation*



## Sample Code Snippets:
### form_input_validation:

#### Card Validation Code Snippet:

```card validation
{
    "category": "action",
    "subcategory": "system",
    "label": "form_input_validation",
    "value": {
        "value": "541919",
        "section": "",
        "screen": "foodcardscreen",
        "is_valid": false,
        "field_validation": "card_number",
        "error_message": "error: Mastercard card not allowed"
    }
}
```

#### VPA Validation - Invalid VPA Code Snippet:

```vpa validation - invalid vpa
{
    "category": "action",
    "subcategory": "system",
    "label": "form_input_validation",
    "value": {
        "value": "kota@fmf",
        "section": "other_options",
        "screen": "paymentpagescreen",
        "is_valid": false,
        "field_validation": "vpa",
        "error_message": "INVALID"
    }
}
```