What is this ! sign in my App?

Hello there,
My App is showing the ! mark shown in the picture.
I know I messed with the source data sheet but now I don´t know what to do in order make it go away.

Thank you!

Solved! I just deleted the table from the source data and created it again.

That usually indicates that your REF can’t be found…




Thank you Steve. I struggled with the references when a label is shown instead of the key column. But could finally fix it.
Thanks for the help as usual :+1:

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