The procedure for setting partner functions:
Step 1
Vendor Account Group
IMG->LOGISTICS GENERAL->BUSINESS PARTNER->VENDOR->CONTROL ->DEFINE
ACCOUNT GROUPS AND FIELD SELECTION
Step 2
Defining Partner Schemas
IMG->MATERIALS MANAGEMENT->PURCHASING->PARTNER -> DETERMINATION -
>PARNER SETTINGS IN VENDOR MASTER RECORD
->DEFINE PARTNER SCHEMAS
Step 3
Assign Partner Schema
IMG->MATERIAL MANAGEMENT->PURCHASING->PARTNER DETERMINATION->PARTNER
SETTINGS IN VENDOR MASTER RECORD->DEFINE PARTNER SCHEMA
„« THEN ASSIGN PARTNER SCHEMA
Step 4
Define Permissible Partner Role Per Account Group
IMG->MATERIAL MANAGEMENT->PURCHASING->PARTNER DETERMINATION -
>PARTNER ROLES ->DEFINE PERMISSION PARTNER ROLES
If you want a partner schema for your own document type then define your partner schema and assign to document type using the below mentioned path.
IMG->MATERIAL MANAGEMENT->PURCHASING->PARTNER ->DETERMINATION -
>PARTNER SETTINGS IN PURCHASING DOCUMENTS ->DEFINE PERMISSION
PARTNER SCHEMAS
And then
ASSIGN PARTNER SCHEMAS TO DOCUMENT TYPE
Once you have this configuration then you change your vendor in easy access menu (XK02-select partner function) define the partner roles.