A group code is a unique series of letters and numbers that you are required to enter to enroll in a reporting group. Generally, group codes are provided by the administrator for that group.
Group codes are case-sensitive and will consist of 12 characters, including letters and numbers.
Not all users enroll in reporting groups, so not all users will have group codes. However, if you know you are supposed to enroll in a reporting group and you don't have a code, contact your administrator.