BAPI_ACC_GL_POSTING_POST extension

Hi,

I'm using BAPI_ACC_GL_POSTING_POST and I need to update PERNR in BSEG.

As far as I can see I have to use extension2 for this job. Don't know if there is a BADI involved as well.

Can anyone help me with some sample code and explanation of how to do this.

Thanks!

Best Regards,

Vibeke