Adding workflow to existing content type will fail the document information panel

Error message: Document Information Panel cannot open a new form. The form contains schema validation errors. Element '{d70e05fb-2118-4d69-9018-72f43e843989}Incident_x0020_Notification_x0020_Workflow' is unexpected according to content model of parent element 'documentManagement'.

Description: When I create a document library and add a new content type with a document information panel and I open the attached template to create a new document there is no issue. I want to create a workflow for this library and when I open the document after I publish the workflow I receive an error. Solution: - Go to the Library Settings; - Select your content type that gives the error - click on Advanced Settings - Edit your template - Word will open the document  - Click on File and Check for Issues - Remove the Custom XML Data - Close Word and save the template back to SharePoint The problem should be resolved now.