We were attempting to replace the “Update Items” action in our Power Automate flow with the “Send HTTP request to SharePoint” – PATCH method to improve performance. The flow works as expected using “Update Items” which replaces a single field value in one list based on a change to a single field value in another list; however, it takes several minutes to complete the flow run. The issue is that the PATCH Method fails with the error: “The type SP.ListItemEntityCollection does not support HTTP PATCH method.” We also tried this using the PUT Method and we received the same error. Note that we have successfully used the GET and POST methods in this environment. The PATCH configuration is below.