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Data validation in the drop down list
We will learn how to make a drop down list and validate the data you enter. It can be quite helpful when organizing your data.
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1.
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Enter the similar data I've entered and choose the cell where you want a drop down list.
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2.
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Click Data in the menu.
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3.
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Click Data Validation and choose Data Validation.
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4.
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In the new Data Validation window choose List in the the Allow field.
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5.
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Click in the Source field and select the cells containing the data you want to have in the drop down list.
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6.
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Click the Error Alert tab.
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7.
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Enter the error message title and the error message.
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8.
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Click the drop down list cell ...
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9.
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... and select an entry.
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10.
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Now write something random in the same cell...
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11.
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... a window with the error message you entered previously should appear.
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