To setup the USPS shipping carrier in NetSuite account, go to Set Up – Accounting – Shipping and click the Add USPS Account button.
You will be navigated to the USPS Registration page and do the registration process correctly. Then create a Shipping Item for USPS shipping carrier by navigating to List – Accounting – Shipping Item. Also choose the proper shipping method listed in the dropdown.
We have to setup the taxcode under the Shipping and Handling rules tab. Otherwise, the record will not get saved.
After this, we could use the USPS as a Shipping Carrier successfully.
