Criteria

Specify the validation rules for the selected cell(s).

For example, you can define criteria such as: "Numbers between 1 and 10" or "Texts that are no more than 20 characters".

Allow

Click a validation option for the selected cell(s).

The following conditions are available:

Condition	Effect
All values	No limitation.
Whole number	Only whole numbers corresponding to the condition.
Decimal	All numbers corresponding to the condition.
Date	All numbers corresponding to the condition. The entered values are formatted accordingly the next time the dialog is called up.
Time	All numbers corresponding to the condition. The entered values are formatted accordingly the next time the dialog is called up.
Cell range	Allow only values that are given in a cell range. The cell range can be specified explicitly, or as a named database range, or as a named range. The range may consist of one column or one row of cells. If you specify a range of columns and rows, only the first column is used.
List	Allow only values or strings specified in a list. Strings and values can be mixed. Numbers evaluate to their value, so if you enter the number 1 in the list, the entry 100% is also valid.
Text length	Entries whose length corresponds to the condition.

Allow blank cells

In conjunction with Tools - Detective - Mark invalid Data, this defines that blank cells are shown as invalid data (disabled) or not (enabled).

Show selection list

Shows a list of all valid strings or values to select from. The list can also be opened by selecting the cell and pressing +D.

Sort entries ascending

Sorts the selection list in ascending order and filters duplicates from the list. If not checked, the order from the data source is taken.

Source

Enter the cell range that contains the valid values or text.

Entries

Enter the entries that will be valid values or text strings.

Data

Select the comparative operator that you want to use. The available operators depend on what you selected in the Allow box. If you select "between" or "not between", the Minimum and Maximum input boxes appear. Otherwise, only the Minimum, the Maximum, or the Value input boxes appear.

Value

Enter the value for the data validation option that you selected in the Allow box.

Minimum

Enter the minimum value for the data validation option that you selected in the Allow box.

Maximum

Enter the maximum value for the data validation option that you selected in the Allow box.