POPrince Oliver Syncfusion Team July 17, 2019 01:59 AM
Thank you for contacting us.
On the client side, we have shown the upload status based on the server status code. If the status code is between 204-299 then we consider it to be successful. So, kindly set the status code above 300 for BadRequest and to notify the error.
Let us know if you need any further assistance on this.