Replace the NULL values in a measure as N/A in Tableau

This looks like a simple trick but can waste lots of your time if you don't know how to do it as there are no Tableau Tech notes on this..

Steps to replace blank/null values with a Text like 'N/A'

Open the workbook.
Drag measure into Detail cards.
Right click on the measure shown in the details and select Format.
You'll see the option for the Last setting which is Special Values(eg. NULL)
Enter the desired text like 'N/A'
You can see the screenshot below for more details.
If you have only two measures in Measure Values, this could get messy fast, so drag another measure onto the Measure Values card for these steps and drag it off when you’re done.

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