The source code control system you use must be specified in your POM file in an <scm> entry similar to the one shown here:
<scm> <connection> scm:svn:http://svn.apache.org/repos/asf/maven/components/trunk </connection> <developerConnection> scm:svn:https://svn.apache.org/repos/asf/maven/components/trunk </developerConnection> <url>http://svn.apache.org/viewcvs.cgi/maven/components/trunk</url> </scm>
To determine what to enter for your connection URL (the <connection> tag) go to the link http://maven.apache.org/scm/scms-overview.html for a list of supported SCMs and click on your source code control system to see the appropriate syntax for your particular software.
In general the format for an SCM URL is: scm:<scm_provider><delimiter><provider_specific_part>
In the example above, the scm_provider is svn (Subversion). The delimiter is a colon. And the rest of the line is the provider_specific_part.
It is important to prepare the release just before performing the release. The reason these processes have been separated into two steps is to allow the user to confirm that everything has been set correctly before the actual release. If between the prepare and performing of the release there is a change to the SCM tree, an error will occur causing the prepare process to restart.
In order to release projects with flat structure in Continuum, the project must be checked out in a single directory. You can do this by checking the "Checkout multi-module project in single directory" field when you add your Maven Two project in Continuum. See Add a Project for more details.
Projects with flat structures are released in the same process described above.