Changing Sales order Status (Z-Status Profile) without manual intervention

Hi All,

I have a Z-Status Profile created for Sales Order. There are about 6 statuses in this profile. An enhancement requires change of particularly two statuses only by the user exit after certain calcualtions and not manually by any user in any case.

Can anyone suggest a way to handle this case? If authorization object should be created then based on which fields should this authorization object be created? If not, this there any other way to handle this.

Thanks,

Sophia Xavier