The svn-tag plugin cannot perform tagging when a Subversion SCM is configured as part of the multiple-scm plugin, e.g. when CVS and Subversion sources are required during build. It fails with the message that MultiSCM is not of type SubversionSCM and therefore the tagging is not executed.

This feature request is to support the tagging if the SubversionSCM is used within a Multiple SCM configuration with the limitation that only the first occurrence of the SubversionSCM is used for the tagging (I did not have any requirements to support multiple SubversionSCM in only Multiple SCM configuration).