Hi Eva,

It appears that the upload of a TSV file gets ignored when it comes to the checking.

However, if you do a copy/paste of the TSV information, the validator error does come up successfully.

Also, if the TSV file were to be converted to where it's a CSV file with actual commas separating values rather than tab-spaces, the error also appears.

So what might be the best approach here is for you to convert that TSV file into either an Excel .XLS file, a .CSV file that is comma-separated, or a flat .TXT file rather than just uploading it as a TSV.

Does that make sense?

Give my attached file a try by uploading it into your Specimen list and you should see the error appear without fail.

Regards,

Jon