I'm using the USPS API and it works fine in giving the retail rates, but I want it to provide the commercial (online) rates. So far in my research (as a non-programer) it seems to me that magento passes XML variable "service" such as <Service>PRIORITY MAIL EXPRESS</Service> to the USPS and gets the rates back. The services listed in this user guide https://www.usps.com/business/web-tools-apis/rate-calculator-api.pdf list most of the service variables as as having a regular and commercial version:
whiteSpace=collapse enumeration=
First Class
First Class Commercial
First Class HFP Commercial
Priority
Priority Commercial
Priority Cpp
Priority HFP Commercial
Priority HFP Cpp
Priority Mail Express
Priority Mail Express Commercial
etc.
However the configuration settings in Magento under shipping methods>USPS>allowed methods show no services with "commercial" appended as in the USPS pdf.
I would hope there is a setting somewhere in Magento that tells it to return commercial rates, or perhaps one would need to do some hacking. Anyone?