I have a requirement,In ME21N Transaction I want to display the line items
Cumulative netprice at header ie,Based on the material number,I want to display the alternative unit of measure(Validations)
at the header level of the PO for all the entered line items.
I have added a custom field at header level for netprice through user exit.
Now I want to add all the netprice as mentioned above.
I am using USer Exit MM06E005.
Please specifically the correct the Function Exit in MM06E005.