The maximum number of unique permissions supported for items within a list or library is 50,000.
While the system technically supports up to 50,000 unique permissions, it's crucial to understand the practical implications. Managing a large number of uniquely permissioned items can significantly impact performance.
Here's a breakdown of the considerations:
- Supported Limit: 50,000
- Recommended General Limit: 5,000
Exceeding the recommended limit of 5,000 can lead to:
- Performance Degradation: Applying changes to a large number of uniquely permitted items simultaneously becomes slow and resource-intensive.
- Management Complexity: Tracking and modifying individual permissions for a vast number of items is difficult and prone to errors.
Therefore, while 50,000 is the hard limit, maintaining a lower number of unique permissions is highly recommended to ensure optimal performance and manageability. Consider alternative approaches like group-based permissions or leveraging SharePoint's built-in permission inheritance features to simplify permission management and reduce the number of unique permissions.
