Validate events

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The Google Analytics Measurement Protocol does not return HTTP error codes, even if an event is malformed or missing required parameters. To ensure your events are valid, you should test them against the Measurement Protocol validation server before deploying them to production. After you have validated that your events are structured properly, you should verify your implementation to make sure you're using the correct keys.

You can either call the validation server directly, or use the Google Analytics Event Builder. The Google Analytics Event Builder lets you interactively construct events, and uses the Measurement Protocol validation server to validate them.

This guide describes how to send events to the Measurement Protocol for Google Analytics 4 validation server and interpret the response.

Send events for validation

The only difference in the request for events sent to the Measurement Protocol and the Measurement Protocol validation server is the URL.

All other request fields are the same. See the protocol reference for full details on constructing a valid request.

The following code shows an invalid event being sent to the Measurement Protocol validation server:

Validation response

Here's the validation server's response to the previous event:

{
  "validationMessages": [
    {
      "fieldPath": "events",
      "description": "Event at index: [0] has invalid name [_badEventName]. Names must start with an alphabetic character.",
      "validationCode": "NAME_INVALID"
    }
  ]
}

Here's the validation server's response to a request with no validation issues:

{
  "validationMessages": []
}

Response

ValidationMessage

ValidationCode