From the Kendo UI API reference: "To render an action button for each file, add the following markup to the template: <button type='button' class='k-upload-action'></button><button type='button' class='k-upload-action'></button>"
https://docs.telerik.com/kendo-ui/api/javascript/ui/upload/configuration/template
Can someone explain, why there are two similar buttons in the markup?
From looking at the source code (which requires a license from Telerik), those buttons take different functions depending on the scenario:
Pause and cancel can be available at the same time (if async.chunkSize is set), or retry and remove can both be visible in case of an error.