Unable to Create extension for IDoc CRMXIF_PARTNER_SAVE_M03

Hi All,

i want to add few fields to idoc  CRMXIF_PARTNER_SAVE_M03 , so wanted to extend it, but it is giving error message "action not possible for generated idoc types".

I have go gone through many discussions , in most places it is not answered clearly and it creates lots of confusions.

Kindly request to provide a solution on how to go about achieving it.

Thanks,

Vikram