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title: "Codes in capitals only | PracticeExcel"
description: "Practice a data validation rule in Excel that only allows codes in capital letters, with EXACT and UPPER. Checked as you type."
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# **Codes in capitals only**

**Premium**

Product codes must be typed in capital letters. Write the rule for A2 in C2. Compare A2 with UPPER(A2) using EXACT, since a plain = ignores case.

C2fx

|  | A | B | C | D | E | F |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Product code | Product | Rule |  |  | |
| 2 | KB-104 | Keyboard |  |  |  | |
| 3 |  |  |  |  |  | |
| 4 |  |  |  |  |  | |
| 5 |  |  |  |  |  | |
| 6 |  |  |  |  |  | |
| 7 |  |  |  |  |  | |
| 8 |  |  |  |  |  | |

**Premium lesson**

## **Unlock Drop-down lists and data validation and every other lesson**

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