When a Custom Dimension is active, which data will it affect?

When a Custom Dimension is active, it specifically affects data collected after the Custom Dimension has been implemented. This means any interactions or events that occur after the dimension is set up will be associated with the dimension’s attributes, allowing you to segment and analyze that data based on the characteristics defined within the Custom Dimension.

Prior data collected before the Custom Dimension activation will not reflect the dimension’s effects because that data was collected under different parameters. Therefore, it will not be retroactively altered by the introduction of the Custom Dimension. Consequently, the influence of the Custom Dimension is limited strictly to data captured moving forward from the point of activation. This simplifies the analysis and reporting process by ensuring that any insights derived from the data are consistent with the tracking parameters established through the Custom Dimension.