[DominikPeters]

Can you see from your records whether the confirmation number (i.e. 7601263-535518) is fixed at the time of the report, e.g. sent as part of the email? An alternative that comes to my mind is that the number is assigned when the report is first generated, which could in principle explain why Djokovic's numbers are out of order if the first time he accessed his PDF was on 26 Dec.

[grujicd]

My two PDFs with different QR codes have the same test ID (7601263-535518). So that one is not generated on the fly. But we don't know 100% if it's generated on database insert (altough it very much looks like that), or if there are some batches depending on lab, PCR batch, etc.