Hi, FUTU thesis maker
when your superviosr has deemed your thesis finished, please submit your work to the Turnitin originality check. First use the 'pre-examination' slot. It checks you thesis overlap with published (and other Turnitin-registered) sources. The pre-examination version is not registered. If there are some changes needed, you will be told. 

Before submitting the final registered version you need to use the pdf/a validation tool for your file. It is something the UTU library requires. Please submit the validated file to the final check.

This might sound unnecessarily complicated, but this is just something we need to do according the UTU regulations. :-)
Pete