Start a 2013 site workflow from another workflow

Question

I have seen here several discussion about how to trigger a 2013 list workflow using REST, but so far I cannot succeed in running a site workflow, which should be basically easier. My code:

https://mysite.sharepoint.com/mysite/_api/SP.WorkflowServices.WorkflowInstanceService.Current/StartWorkflow(subscriptionId='0fa223dc-898e-493e-b523-c89ba796688b')

returns a BadRequest. The subscriptionId is correct and the WF called is a site workflow without parameter.
What am I missing?

Answer 1

It seems there is only a workaround: move all actions in the list workflow I wanted to use to launch the site workflow. It works perfectly (of course after re-configuring all parameters).

Answer 2

Try this site "Create a SharePoint 2013 workflow to start the site workflow" http://www.documentmanagementworkflowinfo.com/sharepoint-2013/sharepoint-designer-2013-workflow-start-another-workflow.htm