An upload failure occurs when a file or multiple files fail to upload successfully. In the context of sports content creation, an upload failure can be indicated by the appearance of a yellow triangle behind the event or match. It is important to troubleshoot and determine the cause of the upload failure to ensure successful content delivery. One common factor to check is whether the video files intended for upload can be played locally on the user's computer. If any of the files do not play in the local player, it will also prevent TeamTV from converting them to the internal format. If an upload fails, users can find the option to 'Remove Video' under the ellipsis menu behind the events. This option allows users to remove the failed upload, enabling them to reattempt the upload with the correct files.