How to do the reversal in the item level of a (delivery)document?

hi friends,

Is there any way to put reversal, at the item level for the document already posted ?

Do we have any standard funtion module or BAPI to pass value from the editor ?

My task is, I want to do the reversal in the item level of the (delivery)document.

I tried with the BAPI - BAPI_ACC_GL_POSTING_REV_POST, but this is reversing the whole document. but I want to reverse in line item only.

please suggest me.....

Quick replies would be rewarded.

Thanks in advance.

Regards