In planning terminology, what is the term for the units of time that roll up from the lowest to the highest level?

The term that refers to the units of time that roll up from the lowest to the highest level is "Time Strata." In the context of planning, especially within tools like Workday Adaptive Planning, Time Strata represent how time-related data is structured and organized. This concept is crucial for forecasting and analysis, as it allows for the aggregation of data from more granular periods (such as days and weeks) into broader categories (like months, quarters, and fiscal years).

Understanding Time Strata enables planners to maintain a clear hierarchy of time periods, facilitating accurate data analysis and reporting. It is essential for ensuring that reports and forecasts reflect the appropriate time dimension, allowing organizations to make more informed strategic decisions based on a well-structured timeline.

The other terms may relate to time management or organizational planning but do not specifically capture the hierarchical nature of time data aggregation as effectively as Time Strata does. Time Scales, Time Frames, and Time Components address different aspects of time but lack the nuanced definition specific to the roll-up process inherent in planning terminology.