If you are creating a report or group based on whether a field is or is not populated with data, you will most likely be using the null and empty conditions.

Is Null = Absolutely no data in the field whatsoever
Is Empty = could contain non-visible or empty data such as a space or "  "

Practical Application

So, if you want to create a report, for example, of everyone who HAD a Designation or Credential listed in their record you would set the conditions below:

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