Excel Prevent Duplicate Entries in a Column

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👍👍If you have found this content useful and want to show your appreciation, please use this link to buy me a beer 🍺. • https://www.paypal.com/donate/?hosted... • Thank you! 👍👍 • This video demonstrates how to prevent duplicate entries in a column. The method described uses data validation which sets a rule that a value can only appear once within a specified range. • ------------------------

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