hi guys... Where does the transaction "Quantity" value comes from when using ODBC queries? The table Transaction Lines doesn't have a column with that name.

I think the column you’re looking for is

ITEM_COUNT

.

I think you are right @Mike Robbins!!!

Different transactions have a positive/negative affect. For example, an invoice may reflect a positive quantity of 10, if you create a create a credit memo for 5 of them, that quantity will be reflected as -5.