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The source environment is the environment where the project resides on which the action will be executed. The environments that will be shown here are determined by the configuration of the configuration of the publisher user that is logged in. In short: an environment will be shown here if that environment is defined in a transition as source (publish action) or destination (unpublish action) and the logged in user has the privileges to execute that action on the transition.

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Note that only non-working revisions which are tagged (see Version management) can be published. If uncommitted changes are allowed on an environment, working revisions can be published as well. If a working revision is already deployed on an environment, the previous working revision will be removed beforehand. A project without a tag is the working revision.

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