Why interface validation is different from application validation
Mapping GxP data flows and identifying critical interfaces
Interface requirements: source, target, mapping, transformation, timing, and sequencing
APIs, middleware, file transfers, and event-driven architectures
Testing data integrity and end-to-end process behavior
Integration failure modes: missing, duplicated, delayed, corrupted, or transformed data
Error handling, retries, reconciliation, monitoring, and alerting
Change control and ongoing assurance for interfaces
Practical examples of interface validation strategies