easyQM Master Data
1. What interface options exist for integrating QM master data (inspection types, catalogs, characteristics) with MM material master records in S/4HANA, and when would you use IDocs versus APIs?
QM master data tied to MM is primarily maintained directly on the material master QM view (MM01/MM02) or replicated via ALE/IDocs (MATMAS) in distributed landscapes. For modern integrations, OData/SOAP APIs (e.g., Material API) or CDS-based extraction are preferred for real-time or cloud scenarios. IDocs remain common for legacy ECC-to-S/4 bridges; APIs are preferred for BTP extensions, MDG hub replication, and Public Cloud where direct table access is restricted.