Validation options for dimension members - not just measure values
Today, you can only validate against measure values. Today you can create an agent with a condition that evaluates against a numeric value, eg. value = 0.
If you could validate against dimension members, you could create an agent looking at the string content of eg. a Flight Status dimension. Then you could set up an agent with a condition that evaluates against a string value, eg. string = 'Cancelled'.