The TAP Segment report is only available to users of Audience Segments Targeting.
The TAP Segment PoP report is a proof-of-performance (PoP) report that shows the impressions for the selected campaign, indicating the segments used, the segment price, and the number of impressions.
To access the TAP Segment PoP Report, select Metrics from the TAP Applications menu. The Metrics page opens in a new browser tab; select TAP Reports > TAP Explore from the Metrics menu, and select Segment PoP as the TAP Explore report type.
TAP Segment PoP is described in the Triton Metrics User Guide.