I am having trouble uploading a list to Marketo. Every time I go to upload the list, I receive the below message.
The file is a 'tab delimited' file and I have selected this in 'file format'.
Can someone offer any suggestions/solutions?
Leaving aside the possible Marketo reasons this could also just be a web issue - have you tried CTRL-F5 to refresh your cache? Apologies if this is obvious to you and you've already tried it.