What did the court decide in Jerman v. Carlisle, McNellie, Rini, Kramer & Ulrich LPA?
Answered for: US
We therefore hold that the bona fide error defense in § 1692k(c) does not apply to a violation of the FDCPA resulting from a debt collector's incorrect interpretation of the requirements of that statute.
The Court held that the FDCPA's bona fide error defense does not excuse a debt collector's mistaken reading of the statute's legal requirements. The sentence above is the court in its own words.
This answer is true in US and nowhere else on this site. Another jurisdiction is another answer, or an honest gap: see what has been read for US.