Why is it not possible to apply a mass settings change to a device group with over 600 cameras?

The correct answer is based on the specific limitation regarding the number of cameras within the device group. In certain software environments, particularly in video surveillance management systems, there are often predefined thresholds for the number of devices that can be managed within a single group. This is often related to performance or stability considerations within the software architecture.

In this case, the limitation is specifically set at 600 cameras for mass settings changes. Once a group exceeds this threshold, the system does not allow the application of mass settings changes to ensure optimal performance and avoid potential issues that could arise from managing too many devices simultaneously.

Thus, if a device group has over 600 cameras, the system's design will inherently restrict any mass settings change from being executed on that group, emphasizing the importance of adhering to these operational limits. This ensures that users can effectively manage their resources and maintain robust performance across the system.