Accounting Entry Reversal while Document Header Text & Reference Number Remains Mandatory

Hello!!

Currently, when we are going to make reversal through KB11N the system gives error messege "For document type SA, an entry is required in field Doc. Hdr Text" and we do not want to remove the checks in OBA7 required during document entry

How can we make reversal through KB11N while the document header text and the reference number remains the same

DAWOOD