What condition must be met for displaying a custom KPI as a KPI meter?

For a custom KPI to be displayed as a KPI meter in NetSuite SuiteAnalytics, it is essential that only one summary type field is present. The KPI meter is designed to provide a visual representation of performance against a specific standard or goal, which requires a singular focus in its measurement. By limiting the visualization to one summary type field, the KPI meter can clearly communicate the status or trend of that particular metric without the potential confusion that could arise from multiple summary types being represented simultaneously.

In contrast, including more than one summary type field would complicate the visualization and detract from the clarity and effectiveness intended for a KPI meter. This visual tool is best utilized when it is straightforward and directly tied to a single performance indicator, thus ensuring that users can quickly grasp the relevant information at a glance.