What is the ULN in UCAS application?

What is a ULN number? I did IB, so I'm not sure if I have it. It will not let me mark as complete without filling that section out. Unless I have no qualifications.

ULN number is a Unique Learner Number which basically allows appropriate organisations to see what qualifications you have gained in your lifetime. It shouldn't be a compulsory form in UCAS, but you can ask your school for it and they should be able to provide it to you.

Oh thanks, I still can't mark it as complete for some reason I have no clue why. I don't have a transcript of my results and there's nothing significant on my grad certificate. My advisor is still taking some time to respond.

Look at each bit on that page carefully. There'll be something which you haven't filled in/haven't filled in properly, which is what is causing the error.

I'm sure you're aware, but the equal consideration deadline was a few minutes ago.

Found my problem and I did submit, by a minute late😅. I added my Igcse grades and it worked.