Hi @Prakash Verma
I've noticed that recently some users have reported the OneNote API returning a 504 Gateway Timeout error. This could be caused by various factors, such as network issues, server overload, or request complexity.
One possible solution is to reduce the requested page size. For example, using the $top query parameter to specify the maximum number of items to return per page, which paginates the result set to reduce the workload.
Another possible solution is to retry the request after a certain interval. Sometimes, the 504 error is temporary and can be resolved by resubmitting the request. You could implement a retry logic in your code that checks for the 504 error and waits for a few seconds before trying again.
If the above suggestions don't work, then please open a support ticket on this to get help from the Microsoft support team.
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