And have received confirmation from USPS that your account is active:
If you need to set up USPS or your customers are receiving this error on check out (See below) you should confirm the following
"This shipping method is currently unavailable. If you would like to ship using this shipping method, please contact us."
1. Confirm that our USPS API access is approved
2. Confirm that it is not in test mode and is in production mode
- If USPS says your account is active, this does not mean it is in production mode, - you need to call USPS and specifically request that it be moved to production mode after your account has been approved. A good idea is to perform this quick test:
Insert the following into your browser with your own USERID in place of the XXXX in the URL of any browser:
The problem is that by default, you don’t have access to USPS’s production API. They have to approve you first. Keep in mind that they only allow you to use it on one web site per account, so if you’re setting Magento up for a client, customer, or other business entity other than your own you should set up a separate USPS account for them.
Now, before you paste that into Magento, you should be aware that the USPS test environment only supports very specific data. According to their own documentation:
ZipOrigination: 10022 ZipDestination: 20008 (is set during Checkout process by user) Pounds: 10 Ounces: 5 (weight can be set for every product on Administration > Products) Size: LARGE Machinable: TRUE
To test international shipping use the following values:
But remember, it’s very important that you set up a separate USPS account for each Magento web site (or at least one per domain). USPS will disable your access to their production server if you are caught using your account on multiple web sites.
Be sure that in your request, you explain that you are using third party software (Magento) and that you only want access to the API so that you can calculate shipping costs associated with using USPS.
If you leave out this information they will reject your request or ask you to submit a valid test before they give you access. Third party software doesn’t need to be tested as long as you tell them you are using Magento.
USPS doesn’t allow you to use their API for batch processing or data cleansing, so be sure to NOT check these boxes on the request form.
Once USPS gives you access to their production API server, Magento should work with all USPS shipping options. If you are still having trouble, check that you have access to USPS’s production API server.
USPS Tech Support: 1-800-344-7779 (7:00 AM to 11:00 PM EST daily)