Reversal reason for billing document

Dear Experts,

At the time of billing Cancellation thru VF11, i want to maintain reversal reason in billing document, with standard SAP is it possible...

Header texts are available in billing document, where i want to maintain reason for billing.

and i want to maintain text field as a mandatory in cancelled billing document type

incompletion log is not available for billing in standard SAP

Guys give me a solution without going for developement...

if it is really required a development for this , which is a best approach..

Rewards points are there for early genuine replies.

Regards

Jagadish