An EDI AS400 job involves managing and maintaining Electronic Data Interchange (EDI) systems on IBM's AS400 (now IBM i) platform. Professionals in this role handle data transmissions between trading partners, troubleshoot EDI transactions, and ensure seamless integration with enterprise applications. Typical responsibilities include mapping and translating EDI documents, supporting EDI standards like X12 and EDIFACT, and working with AS400 tools such as RPG, CL, and SQL. This role is critical in industries like manufacturing, healthcare, and retail, where automated data exchange is essential for business operations.