Three-flow enterprise data pipeline synchronizing TLW client master data, requisitions, and invoices with EPICOR ARM via OCI REST APIs and middleware validation layers. Client creates or updates trigger API ingestion with duplicate and mandatory field checks, UUID mapping, and audit logging before ARM client master updates; PO requisitions flow through budget and coding rule validation into ARM approval workflows; approved invoices reverse-flow from EPICOR through deduplication and margin rule transformation back to TLW billing. This architecture demonstrates enterprise-grade ETL patterns for multi-tenant procurement systems, separating synchronous real-time flows from asynchronous cross-system dependencies with comprehensive audit trails. Fork this diagram on Diagrams.so to customize validation rules, add error handling queues, or extend to additional ERP systems.