Previously, users are not able to reuse their deleted document numbers because of the app's strict rule. Now you can reuse them by going to the settings in Company Settings > Basic Settings > App Settings > choose Yes, allow to reuse and save, done. Related Articles9th August 2017 App Update ReleaseChoose numbers of items shown on listing pages14th October 2018 App update release17 March 2019 App update releaseDocument PDF: Header & Footer image