Use these forms to submit your project dissertation and materials.
You do not need to submit your materials at the same time as your main submission - this is to avoid overloading the network close to the submission deadline. However if you do not you must instead submit a checksum for the materials with your main submission, which protects against alteration of the materials before submission. You can submit materials separately at any time before or after your main submission, but the checksum of the materials MUST match that provided in your main submission.
You can use these forms to make any number of submissions, and you might want to do some test submissions to make sure everything works and you know what to do closer to the submission deadline. However only the last submission before the submission deadline will actually be assessed. Any other submissions will eventually be deleted. You can continue to submit after the submission deadline but note that the markers will only have access by default to the last dissertation uploaded before the deadline (and matching materials if they were submitted after the deadline). If you need a later submission to be assessed, or an earlier one in case a submission was made in error, you will need to discuss your requirements with the ITO as soon as possible after the submission deadline. Contact them on https://www.inf.ed.ac.uk/cgi-bin/iss/contact.cgi.