OnlyOne
Only one value is allowed to be selected.
Parameter table
No parameter available.
How to setup
The rule verifies whether the seleced set contains only one value. If the selection contains more than one selected value, the rule will fail.
Examples
| value | valid | description |
|---|---|---|
| (Cairo) | ✅ | Only one value is selected from the set. |
| (Paris, Cairo) | ❌ | More than one value is selected from the set. |