In addition to meeting the standards, there are several challenges. However, the standards are easy to meet: they are written in black and white.
What is difficult is integrating with the local culture. Unfortunately, that aspect is not documented. You don't find this aspect in the books. It might be possible to chronicle it, but that doesn't mean that you could solve the problems. You just have to hold talks and not rush things. You have to take the time to discuss things.
In every country I visited, the cultural issue was always a barrier, even more so than language.