I am getting the following error when I deploy a page layout containing the related list of open activities.
Invalid field:TASK.SUBJECT in related list:RelatedActivityList
Now to get the deployment to pass, I needed to remove the XML part of the page layout that contains details for this related list. Why is this happening, isn't this a reference to a standard field? Any thoughts guys.
Best Answer
Perhaps this a bug - there is a VERY similar issue with a different related list Invalid field:SOLUTION.ISSUE in related list:RelatedSolutionList Error when deploying Case Page Layouts .
Since the issue is so similar and was so recently fixed, I think you should report this one as a bug.