INDIRECT(MATCH...) Formula pulling into correct place but not correct value

The formula on the data tab of the attached spreadsheet pulls the information from the Qty, vatable, and price columns on the items tab. I need the data to move from 1 row per item on items tab to 1 row per sale reference number on the data tab. The formula works so far, it is pulling into the correct column and row but it is not pulling in the correct value. Can anyone please tell me where I have gone wrong.

I apologise - original attachment had a corrupted formula in it. new revised one attached