Since we know this is essentially a claim for damages and interest, it's somewhat like a civil claim. I am trying to imagine the situation.
An organization says, for example, that a case with a defendant cost $15,000 and seeks restitution in that amount. The defendant will no doubt argue that $15,000 is impossible, that it's more like $5,000 or something like that. Naturally, a debate on the amount of damages and the causal link is to be expected.
We know that, in civil law, fault, damages and the link between the two must be proven. Once a judgment has been rendered, it would be hard to imagine that the issue of fault could be contested. However, in terms of the damages and the link between damages and fault, I anticipate legal challenges could be filed.
Did you assess the time it might take to debate this issue?