I am trying to "Create a list item" into another list which is in another site / subsite. Using the workflow "Create a list item", the list I need does not show in the selection. Is there a way to do this in SharePoint 2010?
In SharePoint 2013, you can call HTTP Web Service in SharePoint Designer workflows. but in Sharepoint 2010 based on my humble knowledge, there is no OOTB solution.
So you will need as a workaround to develop that by creating an event receiver on item added in the first list to add the list item to a specific list in a specific site.
Meanwhile, there are many solutions that require a license like plumsail that help you to create a list Item at Any Site via SharePoint Designer.