Dear Experts ,
when i am trying to execute BAPI : /INCMD/BAPI_GROUP_SAVE it will create the substitution master data in the APO system ,
But when i am trying to change the existing interchangeability groups or delete the groups .
BAPI is returns an error . " Interchangeability Group cannot be changed."
Can any one suggests me how to overcome this.
Regards,
sudheer Yatgiri.