I am trying to import groups like here: https://docs.moodle.org/33/en/Import_groups
But when I try to import a file in attachment it throws an error
"groupname" is not a valid field name
The fields name that you have used are all correct but are not in correct sequenced. So what you have to do: Just place the groupidnumber before the description.
Here is your corrected file attached.
Hi. It works! Thank you!