I got errors on mobile so I went and tried to reproduce on desktop.
It turned out is not possible to resubmit in case of this error. If any errors happens, submission should fully rollback. It did not happen in my case when I tried to submit a second time it says we already have this handle. So I had to waste another category just to capture the error for this report.
I believe the server registered parts of my submission but not the most important part ( technical documentation). It is not possible to add it later is it?