Unable to find installable unit with id [org.maven.ide.eclipse.scm.feature.feature.group] in repository [ http://m2eclipse.sonatype.org/sites/m2e-extras]
The first result in Google for this error message is this thread:
Maybe @ulrich can point you in the right direction?
ok. Thanks pascal
If this is happening while you’re installing the OpenMRS Eclipse plugin, then I would guess the problem is that nobody is maintaining the plugin anymore and you can skip that install step.