Regular notes change the icon on the primary list to show a record has a note but if the note is a pop-up, it does not change. The Acumatica suggested work around to open the record does not seem to be a reasonable solution.
Solved
How can you indicate the pop-up note exists for a record?
Best answer by Naveen Boga
Hi
As a work around, you can JOIN with the NOTE table and bring the pop-up note on the Primary List.
I just did a sample example, and hope this helpful.

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