Worked example · simulated scenario

Correcting a Zero Serving Count

A stray zero should not erase a valid lunch. Rejecting it leaves room to correct the intended headcount without losing the meal already chosen for that date.

A lunch is already saved for two people. The cook types 0 in Servings by mistake.

Correct the serving count

1. Open the saved lunch slot and change servings to 0.
2. Attempt to save and review the number field validation.
3. Enter 1, save and verify the new summary.

The last valid plan survives

Zero is rejected and the previous plan remains. Saving 1 updates the lunch to one serving.

The failed save leaves the previous two-person meal intact. Saving one is a deliberate valid update, so the plan and later ingredient calculations can use that smaller portion.

Choose No meal to remove a slot instead of entering zero.