To remove the single product assignment

1. Go to the Admin panel.
2. On the left navigation bar, click the MARKETPLACE menu.
   The menu appears as shown in the following figure:
   
3. Click Manage Vendors.
   The Manage Vendors page appears as shown in the following figure:
   
4. Scroll down to the required vendor row.
5. Click the respective vendor row.
   The selected vendor page appears as shown in the following figure:
   
6. In the left navigation panel, click the Assign Products menu.
   The Assign Products page appears in the right panel as shown in the following figure:
   
7. Scroll down to the product to remove the product assignment.
8. In the remove column of the respective row, click the Remove button.
   The respective product assignment is removed and a  success message appears as shown in the following figure:
   

To remove the product assignment in bulk

1. Go to the Assign Products page.
   
2. Select the checkboxes associated with the products to remove from the assignment.
3. In the Actions list, select Remove.
   The Submit button appears as shown in the following figure:
   
4. Click the Submit button.
   A confirmation dialog box appears.
5. Click the OK button.
   The selected products are removed from the assignment and a success message appears.