Given two projects that have been saved and published to Project Server 2016, how can you make one a sub-project of the other (the equivalent of the "Insert Subproject" ribbon button in the client) using the REST API?

I have been looking through the MSDN documentation, but there are very few examples of how to actually do stuff in Project Server via REST.

From what I can see, a sub-project is represented as a summary task in the master project, the task ID (GUID) is the same as the sub-project's project ID, and there is a property IsSubProject that will tell me if the summary task is just a regular summary task or an actual sub-project.

So given a master project, I can find all the sub-projects by grabbing all the tasks that IsSubProject: true and then retrieving the projects where the project's ID equals the task's ID.

That's all well and good, but given two unrelated projects, how do I create that linkage via REST?

1 Answer 1


Well, as it turns out, linking sub-projects can only be accomplished through the MS Project desktop client:


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.