How long does an incomplete endorsement application stay active in the NDBON files? Incomplete endorsement applications remain active for one year from the date they are initially received in the NDBON office. By Martin|2024-12-10T21:12:17-06:00December 10, 2024|Endorsement| Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTelegramTumblrPinterestVkXingEmail About the Author: Martin