To Edit items:
1-To edit items, click on the [Pen] button to edit. It allocates at the left side of the item. 

2-The [Item Edit Page] below will appear. 

14-If there is any amount difference from supplier, click on the [Discount User Defined Formula] at the right side.

-Then the below this [Formula Builder] will appear. This similar like a small calculator.

-The red box. Use mathematics formula to do the price adjustment. Click left side dropdown list to select.

-The blue box. Insert the numbers at the right side.

14.1-Here will be showing if there is supplier discount, 

14.2-Insert the formula <minus> from the red box column.

14.3-Insert the discount amount at the blue box column. Sample here is 1.

14.4-Click [Tick] to save the formula, at the top right corner. 

15-This is the final look before save.

-Click [Save] button to save the edit. At the top right corner. 

16-Then the item tab will have changes. Price from RM8 change to RM7.

-The items will be balance and same as in the Delivery Order (DO) or Invoice.

17.1-If item quantity has changes,

17.2-Here showing the sample is when the quantity changed to 5.

17.3-Open [Item Edit Page] (kindly refer to Step 12), go to [Doc. Qty. (Ctn)] to do the editing.

17.4-Click [Save] button at top right corner.