An analyst is reviewing a standard report for a large eCommerce site and notices a significant portion of their data for the Page path dimension has been grouped into an (other) row. However, when they check the data quality icon, it indicates that the report is 100% unsampled. What's the cause of the (other) row appearing in this report?

The (other) row can appear when a report contains a high-cardinality dimension. Page path often creates many unique values because large sites can have thousands of distinct URLs. Google Analytics may group less frequent dimension values when the number of rows exceeds report limits. This can happen even when the report is unsampled, because cardinality and sampling are different data quality concepts.