# Independent answer check — episode 140

All examples use invented practice data. Compare the app result with this expected state.

Mapping: Stationery -> Pen, Notebook; Catering -> Coffee, Tea. Cell F2 is the chosen category. Helper H2 formula `=FILTER(B2:B5,A2:A5=F2)` spills two matching items. The Item validation uses H2:H3. For Stationery the options are Pen, Notebook; for Catering they are Coffee, Tea. Re-select old item after category change if necessary.

Do not treat a changed setting as proof of a downstream result unless that result is visible.