Marks return upload fails with 'Coding error detected, it must be fixed by a programmer: Unknown file type'
When uploading a marks return spreadsheet to the system, the upload fails with the above error.
The spreadsheet contains an error in the column headings 'registrationno', 'mark', 'markcode'. The two most common are:
- An uppercase character - 'Registrationno'
- Additional whitespace - 'registration no'. NB this will be very hard to spot if it comes after the word!