JSI Tip 6299. The repadmin /add command fails with error 8445 (ERROR_DS_DRA_BAD_INSTANCE_TYPE) on a Global Catalog Server?

Microsoft Knowledge Base Article 315562 contains the following SYMPTOMS:

When you use the Repadmin tool to manually add a replication link for a read-only naming context on a domain controller, and that domain controller is a global catalog server, the repadmin /add command fails with error 8445 (ERROR_DS_DRA_BAD_INSTANCE_TYPE).

Note: Repadmin is available under Support Tools on the Windows 2000 Server CD-ROM.