Basic Idoc type used for Credit memo processing

Hi ,

I am working to automate the processing of Credit Memos ,Subsequent debits and credits .Can any body suggest me for the Idoc type used for posting of credit memos, which will do the same function of transaction 'MIRO' .Please help me for the above .

Please send the reply on shilpa_mesa@yahoo.com

Regards ,

Shilpa