PCP0 Reversing the Payroll Result but document line Negative postings is not set ？

[yangshengyang]

 HI expert，

    When i find i had ran mistake Payroll Result ，then I run the PCP0 to reverse the Payroll Result ，I check the  the reversed documents ，document line xnegp is not set ，I don't understand why the standard function is reversed,but  xnegp is not set，What is the design idea of the system, and what is my way to implement the requirements？I have try  GGB1 or BTE enhance none of these can be achieved。