SP 2013: Duplicate field name was found after upgrading your SharePoint 2010 solutions to SharePoint 2013

Author: Tobias Zimmergren http://www.zimmergren.net | http://www.tozit.com | @zimmergren Introduction Okay so this will be a pretty short one, but hopefully help some folks that are upgrading their solutions from SharePoint 2010 to SharePoint 2013. While developing fields, content types and the likes in SharePoint 2010, there’s always a few good rules and practices to follow. A good rule of thumb that I tend to stick to is to never use any reserved or system-name for your fields that you create. In this quick post I’ll talk about how to fix the "Duplicate field…

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