Field Icon Identification - Question Mark On top of other icon

[sleepingdog]

I am trying to identify these icons and thier meaning.  
Thank you in advance for your help.

[Ritaf1983 · Accepted solution]

Hi @sleepingdog 
This means that you have a field parameter in the column with the icon.

For more information about the icons please refer
https://learn.microsoft.com/en-us/power-bi/transform-model/desktop-field-list

If this post helps, then please consider Accepting it as the solution to help the other members find it more quickly