Excise entries for Performa Invoice

Hi Experts,

My client wants to have EXCISE entries to get posted automatically to the G/L Accounts maintained in VKOA whenever Performa Invoice is created. i.e. only for Excise condition types JEXP,JCEP,JA1X maintained in Pricing Procedure.

Please suggest how to go about it.

Should I ask ABAPER for the same? If yes the suggest how and where we need to change.

Thanks in Advance.