404 while using special record identifier

create table users
(
    identifier       varchar(50)                       null,
    license          varchar(50)                       null,
    constraint identifier
        unique (identifier),
)

class SpecialUser extends Model
{
    use HasUuids;

    protected $connection = 'special';
    protected $table = 'users';
    protected $primaryKey = 'identifier';
}

    public static function getPages(): array
    {
        return [
            'index' => Pages\SpecialUsers::route('/'),
            'edit' => Pages\SpecialUser::route('/{record}/edit'),
        ];
    }

http://special-acp.example.localhost/acp/special-users/steam:11000011c670bc3/edit