Which of the following settings are not relevant for planning notes?

The assertion regarding the number of the Period ID attribute planning note combinations being unlimited is correct because, in SAP Integrated Business Planning (IBP), there is indeed a practical limit imposed on how many planning note combinations can be created. While users can create multiple planning notes for different periods and attributes, constraints can exist based on system performance and data management best practices. Therefore, claiming that this number is unlimited does not accurately reflect how planning notes are managed within the system.

The other options refer to specific behaviors of planning notes that are key to understanding their functionality. For instance, planning notes typically are indeed editable only by their creators, maintaining data integrity and accountability. Furthermore, many systems implement a life cycle for planning notes, which often includes auto-deletion after a specified period, such as one month, to manage storage and relevance. Additionally, viewing planning notes at the base level allows for more granular analysis, which is crucial for effective planning and collaboration among users.