Your TDI solution directory contains a couple of files which all start with employee. These files tell you which records were added, updated, deleted, skipped or produced an error. The last file is usually the most interesting one. Often employee records give an error because a user was deleted at an earlier stage and recreated with a different GUID. Sometimes users are created with the same login ID as a previous user, which was long deleted and there are more relatively obvious reasons like that why an employee record would create an error. However, sometimes you are just completely in the dark of why a record gives an error. That’s when this little tip helps you to determine the problem.