Google Analytics 4 Field Reference

https://connectors.windsor.ai/googleanalytics4?api_key=[your API key]&date_preset=last_7d&fields=source,medium,campaign,transactionrevenue&_renderer=csv

Combining dimensions and metrics

The Google Analytics 4 (GA4) API limits the amount of extracted metrics per source. You can extract up to 10 metrics and 9 dimensions per query.

Custom dimensions and metrics

Besides the list of fields presented below, users can request custom predefined dimensions and metrics.

It is worth noting that there are two types of fields: Dimensions and Metrics.

• Dimensions are summaries which contain text, such as: account id, account name, campagin, etc.
• Metrics are values which return a numeric value, such as: clicks, conversions, spend, etc.

In order to retrieve the custom fields, you must provide at least one metric. For example, if you want to fetch date, custom_dimension1, you need to select one metric (i.e: sessions). Moreover, if you want to fetch a metric, you do not need to have a dimension in the request which means that you can request date,custom_metric1 directly.

To test if metrics and dimensions are compatible, you can use the Google Analytics explorer: https://ga-dev-tools.web.app/ga4/dimensions-metrics-explorer/