When using shipping items with non-integrated shipping labels and the following is set in Setup > Accounting > Accounting Preferences > Order Management tab, the fulfillment confirmation email may contain a link that directs to USPS/FedEx website but most of the time, if the customer doesn't have integrated shipping, the link returns an error message.
To remove the error on the Item Fulfillment email but still display the Tracking number:
1. Navigate to Setup > Accounting > Customize Fulfillment Email.
2. Copy the Default Text and paste it in the Customization box.
3. Remove {7} in the Customization box.
4. Add the following to the Item Fulfillment codes:
Tracking numbers:<br>
<%=getCurrentAttribute('salesorder','linkedtrackingnumbers')%><br><br>
5. Click Save.