Upon initial installation a sample ticket is created. The ticket number is 2015071510123456 . The date 2015-07-15 is AFAIK not special in OTOBO history. Let's change it to 2020-07-13, the release date of OTOBO 10.0.1. See https://github.com/RotherOSS/otobo/blob/6420a48a53b6699a5f8a2d5093c8ef7800ea7e5c/CHANGES.md?plain=1#L853
See also https://github.com/RotherOSS/otobo_alpha/commit/f9dca013b51c5e9d70a0faa4bf00c257baa5e552