An analyst is reviewing a standard Traffic Acquisition Report and notices that a significant amount of data is grouped into an (other) row. What's the next step to investigate the specific traffic sources hidden within this row?

The (other) row appears when a report reaches cardinality limits and less common dimension values are grouped together. Standard reports may aggregate high-cardinality data to preserve report performance. Explore can be used to build an exploration with the needed traffic-source dimensions and inspect more granular results. This helps identify specific sources or campaigns that are not visible in the standard Traffic acquisition report.