[D] Risk of using XGB models

Hi guys, I am a junior data scientist working in the internal audit department of a non banking financial institution. I have been hired for the role of a model risk auditor. Prior to this I have experience only in developing and evaluation logistic probability of default models. Now i audit the model validation team(mrm) at my current company.so i basically am stuck on a issue as there is no one in my team with a technical background, or anyone that I can even ask doubts to. I am very much own my own.