This issue appears to have been reported a couple of times since 2019 and each time, it's been reported it's expired :-(
I've carried out a detailed analysis on the problem and I'm pretty confident that the issue is with how the Journal logging calculates the values of actions in the game. There are significant discrepancies between the costs associated with repairs and the costs that are logged. The difference can be just a few credits to millions of credits.
The repercussions of this mean that in certain circumstances, any logs we as players provide to FDev will be inaccurate and could lead FDev to come to an erroneous conclusion when investigating issues and compensating players. In addition, the trustworthiness of logs should really be without question but as it stands, there are some significant question marks as to the accuracy of the logs.
I've also documented the issue on the forum with more detail than I've added to the ticket because I can add more images and more information to a forum post.
I've noticed that the repair costs in Odyssey (I've not checked Horizons) don't tally with the UI and what is recorded in the Journal and this is especially obvious when you use something like EDDiscovery and you use the Ledger view to see your Credits and Debits. When you login, EDDiscovery...
forums.frontier.co.uk
HTH