When doing a pre-check or when copying objects, one of the following messages is displayed:
User alerts cannot be migrated from SharePoint 2003.
The Server Extension is required for the migration of user alerts. Since the Server Extension is not compatible with SharePoint 2003, Sharegate is unable to copy user alerts from SharePoint 2003.
Note: As of November 2021, ShareGate is no longer able to provide full support for SharePoint Server 2003 and 2007, which are past the end of their Microsoft support lifetime. For more information, see Contacting our technical support team.