I have two Adobe forms, one for an application fee of $20 and one for an orientation fee of $20. I need to be able to distinguish between the two when in PayPal. I was told by PayPal support that I could add a unique item number when setting up an adobe form which I could then filter on in PayPal to see which $20 came from which form. I can't find an Item Number choice anywhere. Can anyone guide me to the right place?