2.8. To see what obstacles may arise in the course of loading additional data, let's try another file. This one, named 'duplicate_annotations_tutorial.CSV', contains the same five fields as each of the previously loaded files, including 'PATIENT_ID'. After repeating the procedure in steps 3 through 8, the Edit Study page displays an error message stating, "Value already loaded: Subject 3 already has a value for Stratagene" above the 'Annotation Groups' heading; in addition, the status of the newly loaded file shows as 'Error' under the 'Status' column of the 'Subject Annotation Data Sources' table.
After attempting to load the next annotation file 'duplicate_annotations_tutorial.CSV', the 'Edit Study' page shows the error message "Value already loaded: Subject 3 already has a value for Stratagene" (highlighted in red) and the status of the file shows as 'Error' (highlighted in blue).
