What is non aggregatable data?

Technically, "non-aggregatable" data isn't a term. However, it does describe data that shouldn't (or cannot) be aggregated. So, to understand this term, you must first determine what aggregated data is. Aggregated data is the data you collect from multiple sources that are compiled into summary reports. The end goal is to uncover valuable insights.

What's the difference between a non-aggregated and non-aggregated field?

This could be modifications through changing the measure to Sum, Average, Count, Count Distinct and so on. A Non-Aggregated field is one that lacks modification and instead returns plenty of values, without being impeded by a measure. Now that is still pretty confusing, so hopefully, I'll be able to simplify with some screenshots.

What are non aggregatable metrics?

Non-aggregatable metrics are typically those that lose their meaning or become misleading when summed up. These can include averages, ratios, percentages, or any metric that is calculated based on two or more other metrics. See our blog on misleading visualizations to go deeper.