title: Can I restrict document types uploaded to a Sharepoint Online Document Set?
body: <p>I have created a Document Set in SharePoint online and allowed the Document content type to the document set. </p>
  
  <p>Is it possible to restrict the types of documents uploaded to the document set? I only want users to be able to upload Word 2007 documents and above and not any older versions of Word documents such as Word 2003.</p>
  
  <p>Not sure if it is possible or not? I can't see of a way to restrict this from the content type or document set.</p>