module register Brazil

I am developing a registration module for Brazil, a country in the customer area everything is okay when the customer makes the registry saves the new field in the database and display the customer's account and place an order priate also the error acontence when will create or edit a request by admin in time to save it says the message:

SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data

OK

<b>Notice</b>: Undefined index: payment_numero in <b>C:\wamp\www\teste\system\modification\catalog\model\checkout\order.php</b> on line <b>7</b><b>Notice</b>: Undefined index: payment_complemento in <b>C:\wamp\www\teste\system\modification\catalog\model\checkout\order.php</b> on line <b>7</b><b>Notice</b>: Undefined index: shipping_numero in <b>C:\wamp\www\teste\system\modification\catalog\model\checkout\order.php</b> on line <b>7</b><b>Notice</b>: Undefined index: shipping_complemento in <b>C:\wamp\www\teste\system\modification\catalog\model\checkout\order.php</b> on line <b>7</b>{"order_id":11,"success":"You order has been successfully modified orders"}

being that when the request is made the client area not aparace any error