How do I resolve the error An Address is incomplete or invalid in QuickBooks Desktop?

Overview

You are completing a sale and your customer's address seems correct, but you are getting an address error and you want to know how to fix it.

Environment

QuickBooks

Resolution

• One of the addresses on the transaction, location or either the customer card is incorrect:
  • Correct the address on the transaction
  • Correct the address associated with the location/warehouse/site. If blank, populate with an address.  
    • The list of sites created can be accessed at Lists > Inventory Site List.
  • Correct your customer address. If the Billing Address or Shipping Address field are blank, populate