The system map will help you to identify the organisations or actors that also work on the outcomes that you want to realise. In many cases your organisation on its own will not be able to achieve all necessary outcomes and achieve the durable change of the long-term goal(s). So what can your organisation do, given its strategic focus, expertise, resources, etc. and what can others do? What kind of working relationships (partnerships) could we establish with certain parties so we can focus on what we do best and together reach the desired outcomes and change?
Partnership or collaboration are the most direct and active ways to work with others, but not all relationships will necessarily have this level of involvement. In many cases it is more a matter of aligning your interventions with those of other actors.