Why am I seeing "Required Attributes Missing" when uploading a Test file on DxM?

The format of your file's Attributes does not match the template as expected

You may receive this error message while uploading your file if it is not matching the correct format. For example, one of the required Attribute header titles might be missing, have extra characters, or is entered incorrectly. The easiest way to fix this is to download the provided template and then copy and paste your data into it, then try re-uploading: