Which conditions are not prerequisites for key figure disaggregation?

The correct answer highlights that a condition for key figure disaggregation is that the key figure must be editable. If a key figure is set to "Not Editable," it cannot be disaggregated. Disaggregation in SAP IBP involves breaking down aggregated data into more detailed levels, typically based on certain attributes or forecasts. This process requires that the source key figures be modified to reflect new values at a lower level of detail.

When a key figure is editable, it indicates that it is open for changes and updates, facilitating the disaggregation process. If it were not editable, disaggregation would not be possible as there would be no way to adjust or assign new values. Therefore, setting a key figure to "Not Editable" serves as a barrier to disaggregation, making it the correct answer when assessing prerequisites for this process.

The other options pertain to conditions under which disaggregation can occur, either relating to the availability of computed values or the necessity of specific settings, but they do not directly negate the ability to disaggregate as clearly as the chosen answer does.