How can I import users with manager information?

Discussion created by 7211852 on Apr 16, 2015
Latest reply on Apr 17, 2015 by 7211852
I've tried to import users into Samanage with "Reports to" information but I got this error:
Failed to import row 1 from CSV file: Unknown value for 'Reports To' column in row 1

Is there any format constraint? Email address and user full name didn't work.