sp_addlinkedserver '(null)' is an invalid product name

使用SSMS 2008客户端工具逆向生成了创建链接服务器的脚本时，在测试环境执行是报如下错误：'(null)' is an invalid product name.

USE [master]

GO

IF EXISTS (SELECT srv.NAME 

           FROM   sys.servers srv 

           WHERE  srv.server_id != 0 

                  AND srv.NAME = N'MES_DB_LINK_TEST') 

  EXEC master.dbo.Sp_dropserver 

    @server=N'MES_DB_LINK_TEST', 

    @droplogins='droplogins' 

go 

EXEC master.dbo.Sp_addlinkedserver 

  @server = N'MES_DB_LINK_TEST', 

  @provider=N'SQLNCLI', 

  @datasrc=N'192.168.xxx.xxx', 

  @catalog=N'TEST' 

EXEC master.dbo.Sp_addlinkedsrvlogin 

  @rmtsrvname=N'MES_DB_LINK_TEST', 

  @useself=N'False', 

  @locallogin=NULL, 

  @rmtuser=N'tuser', 

  @rmtpassword='123456' 

go