In the world of online payments, you may encounter the occasional error code. Some, like common browser errors and 2CO specific errors have their solutions documented (see below), while others receive little explanation. To help remedy this situation, we’ll be providing information about some of the errors you may receive if you’re a customer making purchases or a supplier testing the transaction process.

We’ll start with some of the more common processing errors:

• “100 Approved” – This error is specific to customers who purchase with an Amex card. It means the order has been declined and they need to contact the issuing bank.
• “238 Invalid Currency” – Most commonly received when the customer uses an AmEx or a prepaid card to purchase something in a currency that is not native to that card.
• “401 Voice” – The issuing bank wants to speak with the card holder to confirm the order.
• “402 Default Call” – This error is specific to customers who are using an Amex card. It means that they have entered the wrong CVV. The customer should be entering the four digits on the front of the card in the lower left corner, not the three digits on the back.
• “530 Do not honor” – There is something is wrong with the information the customer entered. The customer may need to contact their bank to resolve this issue.
• “606 Invalid Tran Type” – This error usually means one of two things, first the customer is attempting to make a purchase with an AmEx card in a currency other than US Dollars. Second the customer is attempting to make a purchase with a prepaid credit card that we cannot accept.

If there are other errors you would like to see us discuss or you know of any helpful resources (websites, books, etc.), please share them in the comments below.

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