SAP Message BKN511 - Profitability segments can only be entered under single entry

Diagnosis
You chose screen variant &V1& for the list entry.

System Response
You can use screen variant &V1& to assign profitability segments.
However, you should note that you can only enter profitability segmentsas single entries for technical reasons.
You can only display profitability segments in the list entry.

Procedure
Choose single entry to enter profitability segments.