DPNs move fast. The 21-day clock starts from the issue date, not receipt....

https://www.bookmark-url.win/a-dpn-is-a-21-day-race-from-the-issue-date-knowing-if-it-is-a-lockdown-or

DPNs move fast. The 21-day clock starts from the issue date, not receipt. Managing the lockdown vs. non-lockdown fork is critical to protecting your clients. This guide clarifies the mechanics, so you can triage fast and keep options open.