Getting this error while adding cdt Constant in expression rule
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Its fine. You can still proceed. To solve this error, just add sort info on the primary key of the column and it should be gone. I have faced it multiple times but couldn't understand the reason.
but it's not allowing me to add sorting as long as I select constant it give me error
Then you can avoid using the builder and directly write the code the expression.
I tried that too getting same error
Can you paste your code snippet?