Copy item across site collection using SharePoint Designer 2013 Workflow

If you were not aware let me inform you that, a workflow can only access items or artifacts (like Lists/ Document libraries etc)  present under the web to which it is published. So what if we need to access the items from a SharePoint list that is not part of current web where the workflow is published it’s not possible with available List Actions. I was stuck with same problem where i had to copy a item from a Custom SharePoint list in a sub-site to another Custom list in parent/ root site collection. Exploring different ways i came across a MSDN article  Working with Web Services in SharePoint Workflows using SharePoint Designer 2013  which just saved my day! I did came across Microsoft Flow  for fulfilling my requirement but that was immediately ruled-out when i came to know that action needs to be manually triggered (No we can’t do that with flow yet).