What is the maximum number of dimensions that can be added after initial setup?

The maximum number of dimensions that can be added after the initial setup is indeed 10. This limit is significant because dimensions play a crucial role in organizing and analyzing data within Workday Adaptive Planning. They allow users to create a more nuanced data model that can incorporate various aspects of the business, such as departments, projects, or products, enabling more complex reporting and analytics.

Understanding the configuration limits of the system is essential for effective planning and reporting. While it’s possible to have other configurations in your planning model, the rule concerning dimensionality sets a boundary that helps maintain system performance and manageability. This knowledge allows users to plan their initial setup thought wisely, ensuring they accommodate future needs without exceeding the established capacity.

The other choices propose higher limits that are not supported by the system's configuration guidelines. Hence, understanding this aspect is crucial for effective utilization of Workday Adaptive Planning.