Adding/updating a child (detail) record using URL formula

Mark,

Thank you. Pop up question is fine as sometimes I want to revise Discount value, and it helps to know the record is being saved.

I did not know about tabbing out of the field - this works. I previously used "Save & keep working" button but tabbing out is easier. Not sure I can force people to do it, maybe a reminder text next to the field might help (not that anyone reads that).

Thanks again.

Arkady
PS: Mountains behind you are very tempting. I'm skiing in France for a few days next week.