If a detail line needs to be changed, first QUERY and FIND the detail line as described above. Press the UPDATE <F4> button to make the changes. Press STORE <F5> button to store the record.
If changes are made to either the customer or detail parts of the invoice, you must go on to the trailer screen. This is done by pressing the NEXT <F7> button with the detail part of the screen displayed.
Once the trailer screen is displayed, if you are changing or adding to an invoice, press the UPDATE <F4> button and then the STORE <F5> button to allow the system to calculate the new taxes and record the new total. If desired, you could also make other changes to the tax and discount information while in UPDATE mode.