1. Unfortunately, the main issue was a changing interface of the third-party system. The manual testing against the real thing was the problem. I fully agree wi

1. Unfortunately, the main issue was a changing interface of the third-party system. The manual testing against the real thing was the problem. I fully agree with automating everything where an abstraction is sufficient. 2. This is good to know. I might have worked with vague requirements for too long, but knowing this may help identify the parts where testing is indeed possible.