Regarding BAPI_ACC_DOCUMENT_POST

Hi All,

I am using BAPI_ACC_DOCUMENT_POST bapi to post the credit memo by using a z transaction. For the field Invoice reference bseg-rebzg, sap is populating the the value "V'. I want the filed to be populated as space. The above value V is populating in BAPI. Do we have any exits or any other method to enhance the value.

Thanks,

Kishore