SharePoint: Request failed: The remote server returned an error: (429). (429 TOO MANY REQUESTS)

Hi SujoyDasgupta ,

When the user sends too many requests within a given time or get throttled in SharePoint Online, maybe cause this error:

workaround1:

It is recommended that you put all upload tasks in a console application and schedule the upload frequency within a certain interval of the code logic, which may help reduce the burden on the client and server machines.

workaround2:

advise you to stagger your jobs and to make sure that an appropriate interval is used so that one job can finish before the next one starts.

Here is the reference document link:Avoid getting throttled or blocked in SharePoint Online | Microsoft Docs

If the problem is still not resolved, please provide detailed error information and let me know immediately. Looking forward to your reply.

Best Regards,
Henry

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