The "Last Period Aggregation" function is specifically designed for stock-on-hand or inventory-type key figures. Its purpose is to display the value from the last period of a lower time level when aggregating to a higher time level. For instance, the inventory value for a week is the value from the last day of that week. This ensures that planning views at any aggregated time level (weekly, monthly, quarterly) accurately reflect the closing inventory balance for that period, providing essential flexibility for planners to analyze inventory at different granularities.

B: This describes the calculation for "Days of Supply" or "Inventory Cover," which is a ratio of inventory to demand, not a time-based aggregation of the inventory value itself.

C: The function aggregates the value from the defined last period, regardless of whether it is null or not. It does not perform a search for the last non-null value.

1. SAP IBP for Supply Chain

Model Configuration Guide (2402): In the section on "Key Figures"

under "Aggregation Mode"

the guide describes the LST (Last Period) aggregation. It states

"The value of the last period of the lower time level is copied to the higher time level. This aggregation mode is typically used for stock key figures." This directly supports options A and D as standard use cases.

2. SAP Help Portal

SAP Integrated Business Planning for Supply Chain

"Aggregation and Disaggregation": This document explains

"For key figures that represent stock

you usually want to see the value of the last period of a lower time level on a higher time level. For example

if you have daily values for a stock key figure

you want to see the value of the last day of a week as the value for the entire week. For this

you can use the last period aggregation." This validates the specific scenario in option A and the general principle of flexible calculation across time levels in option D.