The USPS uses Customer IDs to audit your mailing process. As a result, you can only change customer properties if a job has not yet been run for that customer. To edit customer properties.
- Select Tools > Options > NCOA/Link and then click the Customers tab.
- In the Customers group, select the customer to edit. Click Edit (or double-click on the Customer Name).
- Make the necessary changes. Click OK. For descriptions of the fields, see Creating a Customer.