How to use a Chargeback in Oracle Receivables R12.0.6

Hi,

What is Chargeback and its use?

I am trying to use it. These are the steps that I followed.

1.Created a new transaction type with class as "Chargeback".

2.Created an invoice with balance as 24.

3.Created a receipt of 20 and applied it to the invoice.

4. Click on the "Chargebacks" button and then chose the transaction type and filled other mandatory values (chargeback amount = 4 )

5. Trying to save the record but got the error "GL Account is not defined for the Chargeback Adjustment activity"

Kindly help me.

Thanks

Sam