1. Go to Masters > eBusiness Setup.
2. An E-Business setup window will appear. Click on Salesman Setup.
3. All M.R. list will appear. Select the M.R. of which the user wants to change Registration Id.
4. Click on the Modify button.
5. Now in 'Registration Id' the user can change the Registration id as per the requirement.
6. Then click on Save to save the changes.