The user ID is one of the most important pieces of information for the XTM International Support team, when it comes to handling a case, or for identification purposes. Also, in the vast majority of cases, a user ID is one of the first items requested by the XTM International Support team.
Project managers/administrators can find out the project ID in two places within the XTM Cloud UI:
Users → User list.
Once there, click on the information tooltip on the right-hand side of a particular project to display its ID:
Project/file history of a specific project, in column B: