Add Billing and Shipping Addresses for Buyer Accounts for a B2B Store

Set the default billing and shipping addresses for buyer accounts.

Go to your buyer account, and click the Related tab.
Next to Contact Point Addresses, click New.
You can create up to 2,000 contact point address records. Additional records are dropped.
Select the Address Type, either Billing or Shipping.
If you want this address to be the default address, select Is Default Address.
Enter the address.
For stores based on LWR (Lightning Web Runtime), only ISO codes are allowed for the Country and State or Province. We recommend that the Salesforce Admin enable state and country picklists so that only allowed values are available to select. See Enable and Disable State and Country/Territory Picklists.
Save your changes.