Is there some way to create a pop-up alert whenever user edits specific field but only for flagged records?

Are they making these edits via a regular Quick Base form? Sounds like form rules might be handy here

Do you need to just alert them? Or do you need to stop them editing QTY at all. An alternative approach might be that when your 'Flagged Item record' checkbox is checked to add a form rule that locks down / hides the QTY field and displays text on the page that directs them per your comment above. 

To your specific point - form rules can be created such that if the QTY is edited and this is a flagged record - and it differs from the qty of the components - the form rule can display a message that QTY is different - and they need to update the components too. 

Chayce Duncan | Director of Strategic Solutions
(720) 739-1406 | chayceduncan@quandarycg.com
Quandary Knowledge Base

Thanks - Yes an alert is preferred as users should be able to modify QTY on occasion.

But think form rules as you describe might do it...will experiment with them and see.

Thanks for your response.

Well this is closest thing I was able to figure out.

But when I open the record...I do not see any message.

Do you see any problem with this?  Any Idea why I cannot see the message?

Just to make sure to cover the basics first - do you have the field [Component Flag] on the form? That field needs to be on the form somewhere when you open it in Edit. Somewhere like an Admin tab perhaps

Chayce Duncan | Director of Strategic Solutions
(720) 739-1406 | chayceduncan@quandarycg.com
Quandary Knowledge Base

the field is part of form...and still see no message.  Do you think it may be a bug that needs to be reported?

Actually got this to work finally.

I moved the rule up to top of rule list...and when I re-opened it is now displaying the message.