Hi @Shabin Suresh ,
Where a correlation ID is valuable is tracing through a process.SharePoint creates a log (ULS) of everything it does when processing requests, and the correlation ID is basically the thread that ties each step together. Since SharePoint does thousands of requests at the same time, the correlation ID can be used to filter out just the steps that SharePoint was doing for any given request.
If you are an IT Pro or Admin, to figure out what happened, you need to find the ULS logs for the time the event occurred, and search for the Correlation ID in those logs.
For more information, please refer to: https://support.microsoft.com/en-us/office/sharepoint-correlation-id-in-error-messages-what-it-is-and-how-to-use-it-5bf2dba7-43d2-484c-8ef4-e059f76e3efa
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.