# Add the Billing Zip Code as a Custom Field in Industries CPQ Cart

In this task, Felix needs to create a Field Setting so that getCartsItems (called when the cart is loaded) and postCartsItems (called when you click Add to Cart) APIs return the Billing Zip Code field and it displays in Industries CPQ Cart.

1. Go to **Setup**.

2. In the **Quick Find** box, type `Custom Settings`.

3. Click **Custom Settings**.

4. Click **Manage** next to **Field Settings**.

   ![](https://a.sfdcstatic.com/developer-website/sfdocs/industries/media/image101.png)

5. Click **New**.

6. Enter the following for the new Field Setting:

   | Field       | Entry               | Notes                  |
   | ----------- | ------------------- | ---------------------- |
   | Name        | Billing_Zip_Code__c |                        |
   | Feature     | CPQV2               | Links to the CPQ APIs  |
   | Field Name  | Billing_Zip_Code__c | API name of the field  |
   | Inclusion   | (checked)           |                        |
   | Object Name | OrderItem           | API name of the object |
   | Sequence    | 1                   |                        |

   ![](https://a.sfdcstatic.com/developer-website/sfdocs/industries/media/image102.png)

7. Click **Save**.

8. Close the Setup browser tab.

See [Test in Industries CPQ Cart](/docs/industries/cme/guide/comms-test-in-industries-cpq-cart.md).