When uploading image files or EXCEL templates with SMW0, if the MIME TYPE is not maintained, the system will give a prompt.
“There is no MIME type assigned to the object .XLS”, you need to maintain the MIME TYPE of the .XLS file,
select the second binary data, and then go to the
menu “Settings”-“Maintain MIME type
Click “Add” to add a type: TYPE: EXCEL, EXTENSION: *.xls
Or TYPE: EXCEL , EXTENSION : *.xls,*xlsx
save and re-enter.