1. SAP IBP Help Portal
"Configuration of Key Figures": This document details the key figure properties
including "Editability". It explains that "Not Editable" prevents changes in planning views
implicitly allowing other data loading methods. The system behavior described confirms that data can be loaded via integration.
2. SAP IBP Help Portal
"Data Integration Jobs": This section describes the application used for importing data. It states
"You can use this app to import data (master data
time-series data
and so on) into SAP Integrated Business Planning from a file..." This directly supports option A.
3. SAP IBP Help Portal
"Creating Planning Objects in the IBP Add-In for Microsoft Excel": This guide explains the "Manage Planning Objects" feature. It details the process: "You can also upload key figure values for the new planning objects... You can do this by adding key figure columns to the planning object sheet and entering values for them." This directly supports option C.