Nicknames have some inherent restrictions much like an email address. They are as follows:
- Must be unique.
- Cannot be empty.
- Only “a-z”, “0-9”, “-“, “_” and “.” are allowed.
- “-“, “_” and “.” cannot be repeated twice.
- Must be 3 characters minimum
- Must be 32 characters maximum
See our Registration Fields tutorial for more information about how to configure Nicknames.