# Orders: a duplicate and an overdue item

An AT Learn authored walkthrough. Learning example.

## Source
As of 31 October: A-17, RUB 12,000, paid — recorded twice; B-24, RUB 8,000, due 28 October, unpaid; C-31, RUB 5,000, due 5 November, unpaid.

## Result
| Order | Amount | Finding |
|---|---|---|
| A-17 × 2 | RUB 12,000 | Check duplicate |
| B-24 | RUB 8,000 | Overdue as of 31 October |
| C-31 | RUB 5,000 | Not yet due |
| Unpaid | RUB 13,000 | Including RUB 8,000 overdue |

## Review
- [ ] A duplicate is not a second sale
- [ ] Overdue status uses a specific date
- [ ] Unpaid and overdue totals are distinct

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