You should only use the classic (old) line item display if you use it as a modification solution, that is, if you have modified it to meet your requirements.
For the classic line item display, you have to make various settings in Customizing. These settings are in
Customizing
for
Financial Accounting
under:
You have the following options in the classic line item display:
On the initial screen, you can restrict the display to specific line items. For more information, see Displaying Account Line Items
You can save your user-specific selection criteria and settings in your user master. Every time you call up the line item display, the information that is relevant for you is displayed.
Example
For example, an accounts receivable clerk responsible for dunning requires dunning information in the line item display. This clerk requires a line layout with the relevant information. A credit controller requires summarized information. He will therefore display the information he requires using a totals sheet
You can use various functions in the line item display, for example, you can change the line layout, sort the line items, create totals, and so on. For more information, see Functions in the Line Item Display
You can carry out mass changes to the items displayed, for example, to change a dunning block or payment method. For more information, see Carrying Out Mass Changes to Line Items .