This helps Microsoft fix operating system or app problems.
For example, it can help determine if crashes are more frequent on devices with a specific amount of memory or that are running a particular driver version. The Basic level helps to identify problems that can occur on a particular device hardware or software configuration. When the level is set to Basic, it also includes the Security level information.
The Basic level gathers a limited set of information that is critical for understanding the device and its configuration including: basic device information, quality-related information, app compatibility, and Microsoft Store.