*Customization of VA05 and VF05*

Hi,

Iam an ABAPER,

My requiremet is as below.

We get the List of sales documents from Transaction VA05 and in the same way we will get list of Billing Documents from VF05.Now I need to customize the display of both reports.i need to add an an additional field in the output of Va05 and Vf05.

So if we have userexut for the transactions,we can do the customization.

if we don't have any user exit then i think we can replicate the Standard program of the transaction to a Zprogram and do the necessary changes.can we do this.is it easy to replicate this standard transaction.

Please suggest a solution for this,Do we have any userexits for this Transactions or do we need to copy the standard program and customize it to our needs.

Thanks in Advance.

Regarda

Balaji