How can I create a custom dimension that will convert a dimension that is null into a specific text string? For example, if a dimension named "Location" is displaying a null value, I want to replace it with a text String named "Home".
Check the 'If' condition option in your custom dimension.
It requires these parameters > if(yesno_expression, value_if_yes, value_if_no)
sample > if(${Location} = null, "Home", "Another value")