See different possibilities for this transaction:
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
Display the material master data of any code with MM03 and select its sales organization)
Click on the Sales org 2
Display the material master data of any code with MM03 and click on
Click on the button beside the plant code
Click on the button beside any plant code
Fill possible entries depending on your need