Below are the parameters supported by the Plug and Play Cart. These parameters can only be used if you have added your products to the 2CO database. You are using the Plug and Play cart if you are passing in the three parameters listed under the Required section below. If you would like to test your integration of these parameters, try using our developers.2Checkout area.

Multi-page Payment Routine:
https://www.2checkout.com/checkout/purchase
Supports all payment methods. Supports tangible and intangible products/services.

Single Page Payment Routine:
https://www.2checkout.com/checkout/spurchase
Credit card-only payment routine only available for intangible products/services.

Required Parameters:
sid – Your 2Checkout vendor account number. (64 characters max)
product_id – The 2CO ID for the product or service in your 2Checkout account.
quantity – The quantity of the product. (99 max value)

Additional Parameters:
demo – Y to enable demo mode, do not pass this in for live sales
fixed – Y to remove the Continue Shopping button and lock the quantity fields
lang – Chinese – zh, Danish – da, Dutch – nl, French – fr, German – gr, Greek – el, Italian – it, Japanese – jp, Norwegian – no, Portuguese – pt, Slovenian – sl, Spanish – es_ib, Spanish – es_la, Swedish – sv, defaults to English if this is absent, but en may be used for English as well.
return_url – Used to control where the Continue Shopping button will send the customer when clicked. (255 characters max)
merchant_order_id – Specify your order number with this parameter. It will also be included in the confirmation emails to yourself and the customer. (50 characters max)
pay_method – CC for Credit Card, CK for check, AL for Acculynk PIN-debit, PPI for PayPal, or PPL for PayPal Pay Later. This will set the default selection on the payment method step during the checkout process.
skip_landing – If set to 1 it will skip the order review page of the purchase routine. If there are options on the products it will cause an error and redirect the customer back to the order review page.
x_Receipt_Link_URL -Used to specify an approved URL on-the-fly, but is limited to the same domain that is used for your 2Checkout account, otherwise it will fail. (no limit):

• This parameter will over-ride any URL set on the Look and Feel page.
• If Direct Return is disabled: If only one product is ordered, it will over-ride the return URLs on the product as well. If more than one product is ordered, then this parameter will control where the “Click Here to Notify [Your Company]” button on the final page takes the customer, but the return URLs on the products will be listed as links below the button, next to the description of the product.
• If Direct Return is enabled : If one product is ordered, this parameter will NOT over-ride the return URLs on the products. If more than one product is ordered, then this parameter will over-ride the product return URLs. Also keep in mind that many third party shopping carts recommend that Direct Return be disabled to work properly.

To populate the billing information page you may pass in:
card_holder_name – Card holder’s name. (128 characters max)

The card holder’s name can also be populated using the first_name, middle_initial, and last_name parameters. IMPORTANT: If you use these three parameters, the data will be combined into and returned as card_holder_name to your Approved URL script.

street_address – Card holder’s street address (64 characters max)
street_address2 – The second line for the street address, typically suburb or apartment number information (64 characters max)
city – Card holder’s city (64 characters max)
state – Card holder’s state (64 characters max)
zip – Card holder’s zip (16 characters max)
country – Card holder’s country (64 characters max)
email – Card holder’s email address (64 characters max)
phone – Card holder’s phone number (16 characters max)
phone_extension – Card holder’s phone extension (9 characters max)

To populate the shipping information page you may pass in:
ship_name
ship_street_address
ship_street_address2
ship_city
ship_state
ship_zip
ship_country

Please note that shipping information will only be collected for items that are defined as tangible in our system. Shipping is also only charged for tangible items.

The billing information page will also be populated with the information from the shipping page if the shipping information is collected on that sale and the billing information is not passed in.

Custom Parameters:
You may pass in any additional parameters that you may need and they will be returned to you at the end of the sale. The only restrictions on custom parameters are that they can not share the name of ANY parameter that our system uses, even from the other sets. Please note that you WILL need a return script set up on the Look and Feel page to receive any of these parameters back as they are not included in the confirmation emails.

Passing Multiple Plug and Play Products:
You may also pass multiple plug and play products in one form. To do this add a corresponding digit to the quantity and product_id parameters to group them for each product. For example, if we wanted to pass two products into the system we would be passing in first the sid parameter, then product_id1 and quantity1, and then product_id2 and quantity2.

Example:

<form action='https://www.2checkout.com/checkout/purchase' method='post'>
<input type='hidden' name='sid' value='123' >
<input type='hidden' name='quantity1' value='1' >
<input type='hidden' name='product_id1' value='1008' />
<input type='hidden' name='quantity2' value='1' >
<input type='hidden' name='product_id2' value='1014' >
<input type='hidden' name='quantity3' value='1' >
<input type='hidden' name='product_id3' value='1011' >
<input name="submit" type='submit' value='Buy from 2CO' >
</form>

You can receive back all of the parameters that were passed in as well as the following parameters:
order_number – 2Checkout.com order number
total – the total amount of the purchase
ship_method – the shipping method that was selected for this order (if applicable)
credit_card_processed – Y if successful (Approved).
merchant_product_id – your product ID for purchased item
key – the MD5 hash that can be used to verify that the sale came from one of our servers

Also note that this is the only parameter set that can be used for recurring billing with our service.

Important: You can not mix the three parameter sets. This will cause problems during payment or may prevent the payment pages from working at all.

Important Note: When you are testing parameters, please be certain to clear the cookies in your browser between tests to ensure the changes you have made are applied. For more information on clearing the cookies please click here.

Related Article: Country Codes

Below you will find a listing of the supported Authorize.net-compatible parameters and what information each parameter should contain. This parameter set is used by third party carts and custom designed scripts. Please note that 2Checkout must know what is being sold in every sale. There are parameters available that allow for dynamic product creation. These will be discussed as well, and must be used if you are using this parameter set, but they are not Authorize.Net specific. If you would like to test your integration of these parameters, try using our developers.2Checkout area.

Multi-page Payment Routine:
https://www.2checkout.com/checkout/purchase
Supports all payment methods. Supports tangible and intangible products/services.

Single Page Payment Routine:
https://www.2checkout.com/checkout/spurchase
Credit card-only payment routine only available for intangible products/services.

Required Parameters:
x_login – Your numerical 2checkout vendor account number.
x_amount – The total amount to be billed, without a currency symbol, and only two decimal places if used (8 characters, decimal, 2 characters: Example: 99999999.99)
x_invoice_num – A unique order id from your system. (64 characters max)

Product Identification Parameters:
Suppliers using this parameter set must pass in parameters to identify what is being sold during the purchase. These parameters will also benefit suppliers as when used correctly the product information will be displayed to customers on the purchase pages and will be listed on the suppliers 2Checkout.com sale detail page.

id_type – Due to changes in with the Product Identification parameters this parameter should be passed in once during the purchase and will need to have its value set to 1.
c_prod – The ID of the product that is being purchased. The quantity of product being purchased can passed with this parameter by placing a comma after the ID and then the quantity in numeric format.
c_name – The value of this parameter should contain the name of the product to be created. (128 characters max)
c_description – The value of this parameter should contain a short description of the product to be sold. (255 characters max)
c_price – The price of your product. Please note that in order to prevent a discrepancy between the total parameter and the sum of the product identification c_price parameters which may confuse the customer, the product price will not be displayed on the purchase page. (8 characters, decimal, 2 characters: Example: 99999999.99)

You can use these identification parameters to pass in multiple products as well. To do so you will need to append a digit to each parameter. For example, c_prod_1, c_name_1, c_description_1, c_price_1 will describe the first product, then to describe the second product you would use a 2 so the parameters will read c_prod_2, c_name_2 and so on.

Additional Parameters:
demo – Y to enable demo mode. Do not pass this in for live sales. Can also be controlled within the account.
lang – Chinese – zh, Danish – da, Dutch – nl, French – fr, German – gr, Greek – el, Italian – it, Japanese – jp, Norwegian – no, Portuguese – pt, Slovenian – sl, Spanish – es_ib, Spanish – es_la, Swedish – sv, defaults to English if this is absent, but en may be used for English as well.
merchant_order_id – Specify your order number with this parameter. It will also be included in the confirmation emails to yourself and the customer. (50 characters max)
pay_method – CC for Credit Card, CK for check, AL for Acculynk PIN-debit, PPI for PayPal, or PPL for PayPal Pay Later. This will set the default selection on the payment method step during the checkout process.
skip_landing – If set to 1 it will skip the order review page of the purchase routine.
x_Receipt_Link_URL – Used to specify an approved URL on-the-fly, but is limited to the same domain that is used for your 2Checkout account, otherwise it will fail. This parameter will over-ride any URL set on the Look and Feel page. (no limit)

To populate the billing information page you may pass in:
x_First_Name – buyers first name (64 characters max)
x_Last_Name – buyers last name (64 characters max)
x_Phone – buyers phone number (16 characters max)
x_Email - buyers email address (64 characters max)
x_Address – buyers address (64 characters max)
x_City – buyers city (64 characters max)
x_State – buyers state (64 characters max)
x_Zip – buyers zip code (16 characters max)
x_Country – buyers country (64 characters max)

To populate the shipping information page you may pass in:
x_Ship_To_First_Name
x_Ship_To_Last_Name
x_Ship_To_Address
x_Ship_To_City
x_Ship_To_Country
x_Ship_To_State
x_Ship_To_Zip

Please note that since this parameter set is for third party shopping carts, we do not collect shipping information for these types of orders. This is because your cart is responsible for calculating the shipping and it is passed in as part of the x_amount parameter.

It is also important to note that when using the Authorize.Net set of parameters, 2CO only requires the three listed under the required section. We will therefore not passback strictly Authorize.Net style parameters for everything unless they are passed in to us. This is not often a problem as most carts do this anyways. For example, x_First_Name and x_Last_Name will prepopulate the billing name, but 2CO uses card_holder_name for this. card_holder_name will then be returned unless x_First_Name and x_Last_Name are passed into 2Checkout.

Custom Parameters:
You may pass in any additional parameters that you may need and they will be returned to you at the end of the sale. The only restrictions on custom parameters are that they can not share the name of ANY parameter that our system uses, even from the other sets. Please note that you WILL need a return script set up on the Look and Feel page to receive any of these parameters back as they are not included in the confirmation emails.

Return Parameters:
You can receive back all of the parameters that were passed in as well as the following parameters:
x_2checked – Y if card was successfully processed.
x_MD5_Hash – The MD5 hash that can be used to verify that the sale came from a 2CO server.
x_trans_id – the 2CO order number for the order.

Using this parameter set, we are not receiving any product information. As you can see, you are only passing in a total amount to us. Usually, the cart will have some means of using the x_invoice_num to determine what was purchased after the sale. A return URL will need to be set up on the Look and Feel page for the cart to correctly determine this.

Consult the documentation that came with your cart or contact the cart manufacturer for assistance with setting this up or to determine what URL you should enter on the Look and Feel page for your cart to receive the product information.

Recurring billing can not be done with this parameter set. You must use the Plug-N-Play parameter set and have the products defined within the 2CO database for recurring billing.

Important: You can not mix the three parameter sets. This will cause problems during payment or may prevent the payment pages from working at all.

Important Note: When you are testing parameters, please be certain to clear the cookies in your browser between tests to ensure the changes you have made are applied. For more information on clearing the cookies please click here.

Related Article: Country Codes

An HTTP Error 500 (Internal Server Error) indicates that there is a problem inside of your script or the servers configuration. This error is most likely caused by a typo in the code or an invalid or illegal use of a function within the script. For the pass back to function correctly, then your script must be correctly set up.

HTTP errors are not generated specifically by 2Checkout. They are a part of the HTTP protocol and are common amongst all web servers. It is therefore beyond the realm of 2Checkout’s support to provide you with specific instructions for making these changes as every server is set up differently and 2CO does not provide server administration services as part of our support plan.

For assistance with debugging your scripts, we suggest that you contact your server’s administrator, webmaster, or hosting provider’s technical support staff. Due to the nature of this particular error, you may also be able to receive assistance from other suppliers of ours. The 500 error message is often due to a coding error in the script, so some of our other suppliers in our tech support forum may be able to help you find the mistake.

We have observed that this error is experienced in certain web browsers more than in others, in particular within Internet Explorer. If your return page or script does not output at least 530 characters, this can potentially cause a MIME header error. Mozilla based browsers such as Firefox seem to be able to handle these pages and will display either the real error or the small output when Internet Explorer has problems. Since this issue is an issue with the browser software itself, there is little 2Checkout can do to control this. If you are receiving this error, please try to increase the output that your return page generates to more than 530 characters or try a different web browser to see if you observe different results. Note that this is not a solution for all HTTP 500 error messages, but it is meant to be a useful step in debugging your script and has been reported as a successful step by some of our other suppliers.

An HTTP 403 Forbidden error indicates that due the set up of your script and/or server, the viewer does not have permission to view this page. For the pass back to function, 2CO must be able to access the script and post the variables to it.

HTTP errors are not generated specifically by 2Checkout. They are a part of the HTTP protocol and are common amongst all web servers. It is therefore beyond the realm of 2Checkouts support to provide you with specific instructions for making these changes as every server is set up differently and 2CO does not provide server administration services as part of our support plan.

To test and see if your file is working correctly:

1. Open your web browser.
2. Type in the full URL to your script or return page (including the http://www. part) and press enter.
3. If you receive the message again, the problem is in your script and/or on your server. Note that the exact wording of the error message may vary slightly depending on your browser and your server. But if you see something about ‘forbidden’ or ‘error 403′ then the information above pertains to your situation.

If you are going to use a picture of a credit card or a credit card company logo on your web site, it must be clearly and immediately adjacent to the phrase “2Checkout.com is an authorized retailer for (your business name.)” Per Credit Card Association Rules, unless your company has a direct business relationship with the credit card company and is authorized to display the credit card or the logo, the image must be removed from your web site.

Credit card association rules state that only a merchant account holder may display credit card logos on their websites. 2CO does not provide you with a merchant account. You can continue to display these logos, as long as immediately above, beside, or below the logos, there is a clear statement that 2CO is your authorized retailer.

Alternatively, you can display the logos shown here. Right click on the image of your choice below and choose “Save Picture as…” to save as a file on your computer.

Please also see 2CO Certified for “2CO Certified Seller” buttons.