How long are rejected applications kept?
They are deleted after the retention period set by KBN, which is 365 days by default. Verified results of licensed athletes are kept as part of the sporting record, as the privacy notice explains.
Related questions
Answers follow the published KBN rules. The verify page is the authority for any licence or certificate, and where the rules do not cover a case, the Ranking Committee decides. Helpful counters on this demo site started from sample values.