Server Names and the COPY Request

Subversion makes use of the COPY request type to perform server-side copies of files and directories. As part of the sanity checking done by the Apache modules, the source of the copy is expected to be located on the same machine as the destination of the copy. To satisfy this requirement, you might need to tell mod_dav the name you use as the hostname of your server. Generally, you can use the ServerName directive in httpd.conf to accomplish this.

ServerName svn.example.com

If you are using Apache's virtual hosting support via the NameVirtualHost directive, you may need to use the ServerAlias directive to specify additional names that your server is known by. Again, refer to the Apache documentation for full details.