It is possible to create two or more users with the same user name in Web TimeSheet; however, the duplicate users’ login names must be unique.
Microsoft Project does not allow users with the same user name to be created.
Below is the information on how the Integration Manager handles transfers involving duplicated users.
If you attempt to transfer users that are duplicated in Web TimeSheet to Microsoft Project, when none of the duplicated users exist in Project then the Integration Manager will automatically append, in brackets, the user’s login name to their last name in Project. This will happen even if only one of the duplicated employees is transferred.
If you attempt to transfer users that are duplicated in Web TimeSheet (or their data) in either direction, when that employee’s user name exists – but has not been appended with their log in name – in Project [Note: This situation may arise if, for example, you transferred a user to Project before creating a duplicate in Web TimeSheet, or if you created a user who was duplicated in Web TimeSheet independently in Project (this is not recommended)] then the Integration Manager will, not transfer the duplicated users/data, and an error will be logged, since the user’s data in Project may correspond to any of the duplicated users in Web TimeSheet.
In this case, you may manually append the user’s log in name to their last name in Project, and then transfer the user/data.