Enable USPS in Magento

Question

I'm trying to enable USPS in Magento. I already created an account for USPS and ask their staff to move it to production server.

Then I fill up all necessary fields in System -> Configuration -> Shipping method -> USPS. I tried to search around and corrected all fields but I'm still unable to make it works.

I have enabled debug in USPS module and catch below response from USPS (there's no error at all):

<RateV4Response>
<Package ID="0">
<ZipOrigination>92672</ZipOrigination>
<ZipDestination>90503</ZipDestination>
<Pounds>0</Pounds>
<Ounces>0.2</Ounces>
<Size>REGULAR</Size>
<Machinable>TRUE</Machinable>
<Zone>1</Zone>
<Postage CLASSID="3">
<MailService>
Priority Mail Express 1-Day&lt;sup&gt;&#8482;&lt;/sup&gt;
</MailService>
<Rate>14.10</Rate>
</Postage>
<Postage CLASSID="2">
<MailService>
Priority Mail Express 1-Day&lt;sup&gt;&#8482;&lt;/sup&gt; Hold For Pickup
</MailService>
<Rate>14.10</Rate>
</Postage>
<Postage CLASSID="55">
<MailService>
Priority Mail Express 1-Day&lt;sup&gt;&#8482;&lt;/sup&gt; Flat Rate Boxes
</MailService>
<Rate>39.95</Rate>
</Postage>
</Package>
</RateV4Response>

It seems that I have received correct data, however in front-end, I still only see "This shipping method is currently unavailable...."

Do you have any idea about this?

Thanks!

Answer 1

What version of Magento and have you applied the July 28 patches so Magento now recognizes Priority Mail Express as having replaced Express Mail?

July 28 USPS API update patch

There are two listed for each version except 1.7.x and they have to be applied in the proper order. The first one upgrades the Shipping Methods subsystem and the second one enables the USPS API & Service Name change.