Jul 22 2019 10:42 PM
Oct 23 2019 02:59 AM
Hi, @SlavaG ,
We started to experience the same throttling issues in September 2019, see the following post with all details: https://techcommunity.microsoft.com/t5/SharePoint/SharePoint-Migration-Tool-calls-are-THROTTLED-by-O... The difference is that we are MIGRATING small sites from SP to SPO using latest out-of-the-box SharePoint Migration Tool.
You might subscribe to our thread - probably, we'll get some help/feedback there.