What setting cannot be maintained as a default value when creating a planning view in SAP IBP for Excel?

When creating a planning view in SAP IBP for Excel, the option that cannot be maintained as a default value is the permission filter. This is because permission filters are typically managed at the system level, relating to user access rights and data security rather than individual preferences for the display settings of a planning view.

Default settings such as the display time zone, output file location, and font size are user-specific configurations that enhance usability and personal preference. For example, the default display time zone allows users to view data in a time zone that is relevant to their operations, the output file location determines where exported files are saved for easy access, and the default font size can make the information more legible based on user preferences.

In contrast, permission filters ensure that users only access the data they are authorized to see, which remains a part of the broader governance framework of SAP IBP and is not designed to be altered by individual users within their planning views.