According to the 2016 guidebook "Star Wars: Rogue One: The Ultimate Visual Guide" by Pablo Hidalgo, Cassian Andor was 26 years old during the events of Rogue One: A Star Wars Story (2016). This series takes place five years earlier, making him 21. The Pre-Mor Authority makes uses of a hologram taken during a census on Ferris six years before that, so in the holographic image, Cassian is supposed to be 15. However, the 2023 reference book "Star Wars: Dawn of Rebellion: The Visual Guide", also written by Hidalgo, contradicts his previous work by stating that Cassian is 27 during 5 BBY (Before the Battle of Yavin). This would make him 21 as seen in the hologram.
The crew of the crashed ship in the flashback on the planet Kenari wear the symbol of the Separatist Confederacy of Independent Systems on their uniforms.
Cassian was born on Kenari, but all of his official documents list his place of birth as Fest. In all of the reading material and guides that were published in conjunction with the release of Rogue One: A Star Wars Story (2016), Andor's birthplace was listed as Fest.
When Timm uses a device resembling a pay phone, the Aurebesh text on its screen reads "insert credits" followed by "call link ". While the incoming screen that the Pre-Mor officers look at reads "Wanted for questioning. Name: Cassian Andor. Species: human. Gender: male. Origin: Fest. Charges: insurrection, destruction of Imperial property, assault on an Imperial soldier."