Purchase Order Version Management - Change in Material PO Text field

Hi,

As per our business requirements, user wants to impose the following:

1. Once a Purchase Order is released and outputted then if there is any change in the Material PO text (item detail tab) a new version should be created automatically.

Please tell me how this is possible in SAP ECC 6.0?

Thanks and regards

Aftab Ahmed Khan

SAP MM Consultant