The data types of the following form fields do not match the SharePoint list

Scenario

• You have a custom InfoPath form applied to a SharePoint 2010 list.
• You attempt to edit or view an item in the list.

Issue

• Error Message: The data types of the following form fields do not match the SharePoint list:

Resolution

• This issue is due to a missing or extra field in your InfoPath form.  
• You can go to List Settings / Form Settings to revert back to the default form.
• Alternatively, you can edit the InfoPath form and fix the fields listed in the error.