Google Wallet
If you do not already have a Google Wallet account, sign up at checkout.google.com/sell/.
- Log in to Google Wallet, and click on Integration under the Settings tab

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Under "Integration settings," uncheck the box "My company will only post digitally signed carts."
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For the field titled "API callback URL," enter https://goodsie.com/ipn/google
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Under the new selection titled "Callback Contents," select the option "Notification as HTML (name/value pairs)." It should look something like this:

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Save these configuration settings.
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Copy your Google Merchant ID and Google Merchant Key under "Account Information" into the respective fields on the Goodsie Settings page.
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Save, and you're all set!
Be sure to follow all steps above to add your Google Wallet account as a payment method. If your account is not configured correctly, your account may appear to be active and may process payments, but inventory and order history on the Goodsie side will not operate properly.
After setting up your Google Wallet account fully, keep an eye on your account. When your first order comes in via Google Wallet, return to Goodsie to see that the order has appeared in Order history as well. If it did not, the setup was not completed correctly. Please go through the instructions above once more to confirm your settings.