The Response Diagnostics Query Stage supports the display of ranking diagnostics within Commerce Studio’s Visual Editor and allows Commerce Studio to know which Fusion stages affected the query.
This query stage is only used alongside Commerce Studio.
When this query stage is used, it must be the last stage in your query pipeline.
Configuration
When entering configuration values in the UI, use unescaped characters, such as \t for the tab character. When entering configuration values in the API, use escaped characters, such as \\t for the tab character.