ATC Error Types in CDS Views: Performance Impacts and Fixes

This article discusses ATC errors in SAP's CDS views that can decrease application performance. The types of errors include empty result sets, non-unique keys, cyclic joins, runtime KPI violations, and insufficient test data. Fixes for these errors include proper join conditions, defining all key fields, removing cyclic conditions, analyzing plan visualizers, and maintaining sufficient test data. By addressing these ATC errors, developers can ensure performance, quality, and stability in their CDS views.