Worked example · simulated scenario

Correcting an Impossible Opening Date

Date fields are easy to reverse when entering a purchase quickly. Catching an opening date earlier than the recorded purchase prevents a confusing batch history without asking the cook to discover the mistake during the next shop.

A cook enters a purchase date of June 10, 2030, and an opening date of June 9 by mistake.

Try the reversed dates, then correct them

1. Choose a known ingredient and enter a positive quantity and compatible unit.
2. Set the purchase date to June 10 and opened date to June 9, 2030.
3. Select Add batch, read the error, then correct the opened date and save.

No mistaken batch is added

The reversed dates are rejected before the batch is added. Matching or later opened dates can be saved.

The rejected attempt leaves stock unchanged. Correct the date you actually know rather than choosing an invented sequence merely to satisfy the form.

Use the actual date a package was first opened when its label gives after-opening instructions.