We are not able to post the PO invoice since the line item "999" is exceeding.Our project had implemented S/4 HANA 1605. Is there any possible way to implement the note in which the line item might be extended. As i went through some of the blogs but not able to find anything. Also checked the note "2363795" Line item field in ACDOCA is 6 CHAR, however BSEG is still getting populated 999 line item. Can you help us on the issue ASAP also we are thinking to do Z program for this please advise.