How is RZ-LGR used during the application process?

For an applied-for primary string, the RZ-LGR will check if the string is valid as a gTLD and identify any allocatable variant strings (and blocked strings). For a variant string, the RZ-LGR will confirm if it is a valid gTLD, check if it is a variant string of an existing gTLD or an applied-for primary string, and determine whether it is allocatable. The TLD Application Management System (TAMS) will automatically check whether the applicant's chosen string(s) comply with the RZ-LGR when the applicant enters the string(s) into the application system.

The RZ-LGR check is part of the Domain Name System or DNS Stability Review, which is automatically performed by TAMS to ensure that an applied-for string would not adversely affect the security or stability of the DNS if the applied-for string proceeds to delegation. The DNS Stability Review verifies whether an applied-for string conforms with various technical requirements, including the IDNA2008 for IDN strings. For example, strings that mix characters from different scripts will be rejected.