All 2Checkout purchase routines require that any special “non-ASCII characters” (i.e. à, å) passed in as parameter values are UTF-8 encoded. This means that any special characters that are not encoded properly will not be interpreted or displayed correctly by our system. For example, if you pass in ‘à la clientele confidentialité’ as the card_holder_name, the purchase routine will display it as ‘? la client?le confidentialit?’. These characters need to be UTF-8 encoded when they are passed into our purchase routine so our system will accept it. If the special characters are UTF-8 encoded ‘%C3%A0%20la%20clientele%20confidentialit%C3%A9′ instead of ‘à la clientele confidentialité’, our system interprets the special characters correctly. Please note that this will not affect customers as these special characters can be entered normally in the information fields on purchase screens, it’s only when the characters are part of a purchase URL that they need to be UTF-8 encoded.

Characters passed in incorrectly.

https://www.2checkout.com/checkout/purchase?card_holder_name=
à la clientele confidentialité&street_address=1785+Obrien+Rd&city=Columbus&state=
Ohio&zip=43228&country=United+States&phone=6149212450&email=no-reply@2co.com&sid=
XXXXXX&product_id=1&quantity=1

Purchase routine display in IE7:

Purchase routine display in Firefox:

Characters passed in correctly.

https://www.2checkout.com/checkout/purchase?card_holder_name=
%C3%A0%20la%20clientele%20confidentialit%C3%A9&street_address=1785+Obrien+Rd&city=
Columbus&state=Ohio&zip=43228&country=United+States&phone=6149212450&
email=no-reply@2co.com&sid=XXXXXX&product_id=1&quantity=1

Purchase routine display in IE7 and Firefox: