Main technical problems one has to overcome when attempting to build a successful expert system for a new domain?

When building a successful expert system for a new domain, key technical problems include knowledge acquisition, where gathering and structuring domain-specific knowledge can be challenging; uncertainty management, as real-world scenariOS often involve incomplete or ambiguous information; and system integration, which necessitates compatibility with existing data sources and technologies. Additionally, ensuring the system is user-friendly and can effectively communicate its reasoning to users is crucial for adoption and trust.