Addition of CUSTOM button in SRM SUS PO page - SRM702

Hi All,

Scenario Used : MM - SRM SUS.

Requirements :  Need to add a custom field  in SRM SUS PO ,click on which will communicate to ECC vai SRM and bring the DMS related information .

As am new to BSP , do we have any enhancement facility such we have in Webdynpro ? if not what will be the best approch we can follow in this case.

Thanks

Channa