Excel® 2013 On Demand

Adding Data Validation to a Worksheet

Worksheet cells can be adjusted so that only certain values can be entered. Controlling how data is entered decreases errors and makes a worksheet more reliable. You might, for example, want it to be possible to enter only specific dates in a range of cells. You can use logical operators (such as equal to, not equal to, less than, or greater than) to set validation rules. When invalid entries are made, a message—developed and written by you—appears indicating that the entry is in violation of the validation rules. The rule set will not allow data to flow into the cell.

Create Validation Rules

Select the range ...