Create dimension display preferences for a specific data source. Dimension preferences control the order and visibility of dimensions in reports and dashboards.

Each preference specifies a category, a priority (lower numbers appear first), and a list of dimension schema field names in values.

Priorities must be unique consecutive integers starting at 1. Current limitation: create requests accept fewer than ten categories with this consecutive sequence. PATCH does not require a consecutive priority sequence.

Category priority orders groups. Values must exactly match Analytics schema field names, including their namespace. Within each group the UI sorts options alphabetically by display label, not by the order of values in this array.