Create Checkout Session

Request to create a session identifier for the checkout interaction. The session identifier, when included in the Checkout.configure() function, allows you to return the payer to the merchant's website after completing the payment attempt.

POST https://na.gateway.spring.citi.com/api/rest/version/46 / merchant / {merchantId} / session

Authentication

This operation requires authentication via one of the following methods:


  • Certificate authentication.
  • Basic HTTP authentication as described at w3.org. Provide 'merchant.<your gateway merchant ID>' in the userid portion and your API password in the password portion.

Request

URL Parameters

{merchantId} Alphanumeric + additional characters REQUIRED

The unique identifier issued to you by your payment provider.


This identifier can be up to 12 characters in length.


Data may consist of the characters 0-9, a-z, A-Z, '-', '_'

Min length: 1 Max length: 40

Fields

apiOperation String = CREATE_CHECKOUT_SESSION FIXED

Any sequence of zero or more unicode characters.

billing OPTIONAL

Details of the payer's billing address.

billing.address OPTIONAL

The payer's billing address.

This data may be used to qualify for better interchange rates on corporate purchase card transactions.

billing.address.city String OPTIONAL

The city portion of the address.

Data can consist of any characters

Min length: 1 Max length: 100
billing.address.company String OPTIONAL

The name of the company associated with this address.

Data can consist of any characters

Min length: 1 Max length: 100
billing.address.country Upper case alphabetic text OPTIONAL

The 3 letter ISO standard alpha country code of the address.

Data must consist of the characters A-Z

Min length: 3 Max length: 3
billing.address.postcodeZip Alphanumeric + additional characters OPTIONAL

The post code or zip code of the address.

Data may consist of the characters 0-9, a-z, A-Z, ' ', '-'

Min length: 1 Max length: 10
billing.address.stateProvince String OPTIONAL

The state or province of the address.

Data can consist of any characters

Min length: 1 Max length: 20
billing.address.street String OPTIONAL

The first line of the address.

For example, this may be the street name and number, or the Post Office Box details.

Data can consist of any characters

Min length: 1 Max length: 100
billing.address.street2 String OPTIONAL

The second line of the address (if provided).

Data can consist of any characters

Min length: 1 Max length: 100
constraints OPTIONAL

Information about any constraints that apply to this transaction.

Specify constraints to ensure that the transaction conforms to predefined criteria. This is useful if your integration does not directly collect all the transaction values (e.g. a session-based integration or a checkout integration).

constraints.paymentPlans OPTIONAL

Information about the payment plan constraints which apply for this transaction.

Specify payment plan constraints to restrict the available payment plan options for this transaction.

constraints.paymentPlans.numberOfDeferrals Integer OPTIONAL

The allowable number of deferral months for the payment plan.

JSON number data type, restricted to being positive or zero. In addition, the represented number may have no fractional part.

Min value: 0 Max value: 99
constraints.paymentPlans.numberOfPayments Integer OPTIONAL

The allowable number of installments for the payment plan.

JSON number data type, restricted to being positive or zero. In addition, the represented number may have no fractional part.

Min value: 1 Max value: 99
constraints.paymentPlans.supported[n] String OPTIONAL

The identifiers for the payment plans supported for this transaction.

If you wish to offer any payment plans to the payer, provide the plan identifiers in this field else pass it as empty.

See Payment Plans for the supported payment plans and their identifiers.

Data can consist of any characters

Min length: 1 Max length: 40
correlationId String OPTIONAL

A transient identifier for the request, that can be used to match the response to the request.

The value provided is not validated, does not persist in the gateway, and is returned as provided in the response to the request.

Data can consist of any characters

Min length: 1 Max length: 100
customer OPTIONAL

Information about the customer, including their contact details.

customer.email Email OPTIONAL

The email address of the customer.

The field format restriction ensures that the email address is longer than 3 characters and adheres to a generous subset of valid RFC 2822 email addresses.

Ensures that the email address is longer than 3 characters and adheres to a generous subset of valid RFC 2822 email addresses

customer.firstName String OPTIONAL

The payer's first name.

Data can consist of any characters

Min length: 1 Max length: 50
customer.lastName String OPTIONAL

The payer's last or surname.

Data can consist of any characters

Min length: 1 Max length: 50
customer.mobilePhone String OPTIONAL

The contact person's mobile phone or cell phone number.

Data can consist of any characters

Min length: 1 Max length: 20
customer.phone String OPTIONAL

The phone number of the person to whom the order is being billed.

Data can consist of any characters

Min length: 1 Max length: 20
device OPTIONAL

Information associated with the device's source of transaction.

device.ani String OPTIONAL

The telephone number captured by ANI (Automatic Number Identification) when the customer calls to place the order.

Data can consist of any characters

Min length: 1 Max length: 10
device.aniCallType String OPTIONAL

The 2 digit ANI information identifier provided by the telephone company to indicate the call type, for example, cellular (61-63), toll free (24,25), etc.

Data can consist of any characters

Min length: 1 Max length: 2
device.mobilePhoneModel String OPTIONAL

The mobile phone manufacturer's identifier for the model of the mobile device used to initiate the payment.

Data can consist of any characters

Min length: 1 Max length: 255
interaction OPTIONAL

Information that controls the payer's checkout interaction.

interaction.action.bypass3DSecure Boolean OPTIONAL

Indicates if you wish to bypass payer authentication using the 3-D Secure Service.

By default, the payer is prompted to authenticate before performing the payment if configured for the 3-D Secure Service.

JSON boolean values 'true' or 'false'.

interaction.cancelUrl URI OPTIONAL

The URL to which you want to redirect the payer's browser if they cancel their payment.

This could be a link to the payer's shopping cart, or the home page of your website.

Data must be an absolute URI conforming to the URI syntax published by IETF RFC 2396. The following schemes are forbidden : javascript

interaction.displayControl OPTIONAL

A group of objects that control the visibility of, and payer-interaction with, displayed information.

interaction.displayControl.billingAddress Enumeration OPTIONAL

Indicates if you require the payer to provide their billing address during the payment interaction.

If you do not provide this field, the billing address will be optional.

Value must be a member of the following list. The values are case sensitive.

HIDE

Hides data fields from the payer.

MANDATORY

Displays data fields and allows the payer to enter data into these fields.

OPTIONAL

Displays data fields and allows the payer to opt out of data entry for these fields.

READ_ONLY

Data is displayed but cannot be modified.

interaction.displayControl.cardSecurityCode Enumeration OPTIONAL

Indicates if you require the payer to provide the card security code for their card payment during the payment interaction.

If you do not provide this field, the card security code will be mandatory.

Value must be a member of the following list. The values are case sensitive.

MANDATORY

Displays data fields and allows the payer to enter data into these fields.

OPTIONAL

Displays data fields and allows the payer to opt out of data entry for these fields.

interaction.displayControl.confirmAchAccountNumber Enumeration OPTIONAL

Indicates if you wish to display a 'Confirm Account Number' field for the ACH Account Number entry.

If the field is shown, the gateway enforces that the same value is entered in both the 'Account Number' and 'Confirm Account Number' fields.If you do not provide a value for this field, the gateway defaults the value to SHOW.

Value must be a member of the following list. The values are case sensitive.

HIDE

Do not display confirm account number.

SHOW

Display confirm account number.

interaction.displayControl.customerEmail Enumeration OPTIONAL

Indicates if you require the payer to provide their email address on the payment interaction.

If you do not provide this field, the payer's email address will be hidden.

Value must be a member of the following list. The values are case sensitive.

HIDE

Hides data fields from the payer.

MANDATORY

Displays data fields and allows the payer to enter data into these fields.

OPTIONAL

Displays data fields and allows the payer to opt out of data entry for these fields.

READ_ONLY

Data is displayed but cannot be modified.

interaction.displayControl.orderSummary Enumeration OPTIONAL

Indicates if you wish to display a summary of the order before the payer submits their payment.

If you do not provide a value for this field, the gateway defaults the value to SHOW.

Value must be a member of the following list. The values are case sensitive.

HIDE

Do not display order summary.

SHOW

Display order summary, which may include payment details.

SHOW_PARTIAL

Display order summary which may not include payment details.

interaction.displayControl.paymentConfirmation Enumeration OPTIONAL

Indicates if you want the payer to confirm the payment details before they submit the payment.

If you do not provide a value for this field, the gateway defaults the value to HIDE.

Value must be a member of the following list. The values are case sensitive.

HIDE

Do not display payment confirmation.

SHOW

Display payment confirmation.

interaction.displayControl.paymentTerms Enumeration OPTIONAL

Indicates whether you wish to hide payment terms for a payment plan during the payment interaction.

If you do not provide this field the payment terms for a payment plan will be displayed.

Value must be a member of the following list. The values are case sensitive.

HIDE

Hides the payment terms from the payer. Note that offering Plan AMEX in some regions may require you to inform the payer of the payment terms before processing the payment.

SHOW_IF_SUPPORTED

Displays the payment terms, if available, to the payer.

interaction.displayControl.shipping Enumeration OPTIONAL

Indicates if you wish to hide the shipping details on the payment interaction.

If you don't provide this field, shipping details will be displayed to the payer.

Value must be a member of the following list. The values are case sensitive.

HIDE

Hides data fields from the payer.

READ_ONLY

Data is displayed but cannot be modified.

interaction.googleAnalytics.propertyId String OPTIONAL

The property ID for your shop site provided by Google Analytics in the form UA-XXXXX-Y.

Provide this ID if you want to track interactions with the checkout using Google Analytics. See www.google.com/analytics.

Data can consist of any characters

Min length: 1 Max length: 20
interaction.locale String OPTIONAL

A language identifier or IETF language tag to control the language of the payment interaction with the payer (e.g. en_US, es, fr-CA).

By default, the language is determined from the payer's browser. Supply a value for this field only if you wish to override the default behavior. If the language you specify is not supported by the gateway, the payment is displayed in the best matching language.

Data must be a language identifier or IETF language tag

Min length: 2 Max length: 5
interaction.merchant OPTIONAL

Information that allows you to display your brand and business details during the payment interaction.

interaction.merchant.address OPTIONAL

Information on your business address.

interaction.merchant.address.line1 String OPTIONAL

The first line of your business address for display to the payer during the payment interaction.

Data can consist of any characters

Min length: 0 Max length: 100
interaction.merchant.address.line2 String OPTIONAL

The second line of your business address for display to the payer during the payment interaction.

Data can consist of any characters

Min length: 0 Max length: 100
interaction.merchant.address.line3 String OPTIONAL

The third line of your business address for display to the payer during the payment interaction.

Data can consist of any characters

Min length: 0 Max length: 100
interaction.merchant.address.line4 String OPTIONAL

The fourth line of your business address for display to the payer during the payment interaction.

Data can consist of any characters

Min length: 0 Max length: 100
interaction.merchant.email Email OPTIONAL

The email address of your business for display to the payer during the payment interaction (e.g. an email address for customer service).

Ensures that the email address is longer than 3 characters and adheres to a generous subset of valid RFC 2822 email addresses

interaction.merchant.name String REQUIRED

The name of your business for display to the payer on the payment interaction.

Data can consist of any characters

Min length: 1 Max length: 40
interaction.merchant.phone String OPTIONAL

The phone number of your business for display to the payer during the payment interaction.

Data can consist of any characters

Min length: 0 Max length: 20
interaction.operation Enumeration OPTIONAL

Indicates the operation that you wish to perform during the Hosted Checkout interaction.

Value must be a member of the following list. The values are case sensitive.

NONE

Hosted Checkout will collect the payment details from the payer and securely store them against the Hosted Checkout session. No operation will be performed after the payer interaction.

VERIFY

Request for the Hosted Checkout interaction to verify the payer's account. The payment details are verified using the verification method supported by the acquirer and the data provided in the request.

interaction.returnUrl URI OPTIONAL

The URL to which you want to return the payer after completing the payment attempt.

During the redirect, the gateway will append a resultIndicator parameter to this URL. This parameter determines the result of the payment. See Obtain the Payment Result section.

Data must be an absolute URI conforming to the URI syntax published by IETF RFC 2396. The following schemes are forbidden : javascript

interaction.theme Alphanumeric + additional characters OPTIONAL

The theme used to control the look and feel of your checkout interaction.

If you do not provide this field the default theme is will be used.

Data may consist of the characters 0-9, a-z, A-Z, '-', '_'

Min length: 1 Max length: 50
lineOfBusiness String OPTIONAL

Your payment service provider might have configured your merchant profile to support several lines of business.

Each line of business can have different payment parameters, such as bank account, supported cards or such.

For example, lineOfBusiness = TICKET_SALES can have a different bank account from lineOfBusiness = MERCHANDISING. One line of business on your profile might be "null". To use that, do not provide the lineOfBusiness field.

Data can consist of any characters except space

Min length: 1 Max length: 100
order REQUIRED

Information about the order associated with this transaction.

order.amount Decimal OPTIONAL

The total amount for the order.

If you provide both this value and any of the sub-total amounts (order.itemAmount, order.shippingAndHandlingAmount, order.taxAmount) then the sum of the sub-total amounts MUST equal the order.amount.

Data is a string that consists of the characters 0-9 and '.' and represents a valid decimal number.

Min length: 1 Max length: 14
order.cashAdvance Boolean OPTIONAL

Set this flag if the transaction is a manual cash disbursement transaction, i.e. cash is disbursed upon the acceptance of a card by a financial institution teller.

JSON boolean values 'true' or 'false'.

order.certainty Enumeration OPTIONAL

Indicates if you expect to capture the full order amount for which you are requesting authorization.

If you do not provide a value for order.certainty the default configured for you by your payment service provider will be used. The value provided in the response shows the value the gateway sent to the acquirer

Value must be a member of the following list. The values are case sensitive.

ESTIMATED

The amount authorized is an estimate of the amount that will be captured. It is possible that the amount captured will be less, or might not be captured at all.

FINAL

The full authorized amount is expected to be captured within the mandated time. The order will only be cancelled in exceptional circumstances (for example, the payer cancelled their purchase).

order.currency Upper case alphabetic text REQUIRED

The currency of the order expressed as an ISO 4217 alpha code, e.g. USD.

Data must consist of the characters A-Z

Min length: 3 Max length: 3
order.custom String OPTIONAL

Information about this order that is of interest to you.

For example order.custom.X, where 'X' is defined by you and must be less than 100 characters from the set A-Z, a-z, 0-9. For example, order.custom.salesRegion. You can specify up to 50 such fields. They are not sent to acquirers.

Data can consist of any characters

Min length: 1 Max length: 250
order.customerNote String OPTIONAL

A note from the payer about this order.

Data can consist of any characters

Min length: 1 Max length: 250
order.customerOrderDate Date OPTIONAL

The date the payer placed the order.

Data must comply with ISO 8601 extended date format, yyyy-mm-dd.

order.customerReference ASCII Text OPTIONAL

The payer's own reference for the order.

This reference may assist the payer to identify the order in their system. For example, a purchase order number, project identifier, or cost center.

Data consists of ASCII characters

Min length: 0 Max length: 25
order.description String OPTIONAL

Short textual description of the contents of the order.

Data can consist of any characters

Min length: 1 Max length: 127
order.item[n] OPTIONAL

Information about the items the payer purchases with the order.

order.item[n].brand String OPTIONAL

The brand of the item.

For example, Dell.

Data can consist of any characters

Min length: 1 Max length: 127
order.item[n].category String OPTIONAL

Your category for the item.

Data can consist of any characters

Min length: 1 Max length: 127
order.item[n].description String OPTIONAL

Description for the item with information such as size, color, etc.

For example, 'Color:Red, Size:M'

Data can consist of any characters

Min length: 1 Max length: 127
order.item[n].industryCategory Enumeration OPTIONAL

Provide the industry category to send this line item to your acquirer for specialized processing as industry data.

Such processing might have legal obligations, which are your responsibility. Do not provide an industry category, unless you are certain it applies to you, and is accepted by your acquirer.

We support the following industry standard processing:

US health care processing using the IIAS standard.

The supported values for this field are:

HEALTHCARE_VISION, HEALTHCARE_DENTAL, HEALTHCARE_PRESCRIPTION, HEALTHCARE_OTHER

We formulate an IIAS message by summing the amounts of all the line items with the same industry category. The amount of a line item is computed as:

(order.item.unitPrice + order.item.tax) * order.item.quantity

Value must be a member of the following list. The values are case sensitive.

HEALTHCARE_DENTAL
HEALTHCARE_OTHER
HEALTHCARE_PRESCRIPTION
HEALTHCARE_VISION
order.item[n].name String REQUIRED

A short name describing the item.

Data can consist of any characters

Min length: 1 Max length: 127
order.item[n].quantity Decimal REQUIRED

The quantity of the item.

Data is a string that consists of the characters 0-9 and '.' and represents a valid decimal number greater than zero.

Min length: 0 Max length: 30
order.item[n].sku String OPTIONAL

The SKU (Stock Keeping Unit) or the item identifier for this item.

Data can consist of any characters

Min length: 1 Max length: 127
order.item[n].unitPrice Decimal REQUIRED

The cost price for the item.

This amount is multiplied with the item quantity (item.quantity) to determine the total amount for this item (item.amount). This amount does not include the tax amount and/or discount amount applicable to this item.

Data is a string that consists of the characters 0-9, '.' and '-' and represents a valid decimal number.

Min length: 1 Max length: 14
order.item[n].unitTaxAmount Decimal OPTIONAL

The tax amount for the item.

This amount is multiplied with the item quantity (item.quantity) to determine the total tax amount for this item.

Data is a string that consists of the characters 0-9, '.' and '-' and represents a valid decimal number.

Min length: 1 Max length: 14
order.itemAmount Decimal OPTIONAL

The total item amount for the order.

If you do not provide this value but provide line item data, then this amount is calculated as the sum of the item.quantity times the item.unitPrice for all the line items (total item amount).
If you provide both this value and line item data, then the order.itemAmount MUST equal the total item amount.

Data is a string that consists of the characters 0-9 and '.' and represents a valid decimal number.

Min length: 1 Max length: 14
order.merchantCategoryCode Digits OPTIONAL

A 4-digit code used to classify your business by the type of goods or services it offers.This is also known as the Merchant Category Code (MCC).

You only need to provide the MCC if you want to override the default value configured for your acquirer link.The value you provide must match one of those configured by your payment service provider.

Data is a string that consists of the characters 0-9.

Min length: 4 Max length: 4
order.owningEntity String OPTIONAL

Your identifier for the part of your organization that is responsible for the order.

You might provide this data when you want to track the accountability for the order. For example, store number, sales region, branch, or profit center

Data can consist of any characters

Min length: 1 Max length: 40
order.recurringPaymentAgreement Alphanumeric OPTIONAL

Your reference to the contract or agreement you have with the payer to process recurring payments.

Data may consist of the characters 0-9, a-z, A-Z

Min length: 1 Max length: 30
order.reference String OPTIONAL

The identifier of the order.

For example, a shopping cart number, an order number, or an invoice number.

Data can consist of any characters

Min length: 1 Max length: 40
order.requestorName String OPTIONAL

The name of the person who requested the goods or services.

Data can consist of any characters

Min length: 1 Max length: 100
order.shippingAndHandlingAmount Decimal OPTIONAL

The total shipping and handling amount for the order.

Data is a string that consists of the characters 0-9 and '.' and represents a valid decimal number.

Min length: 1 Max length: 14
order.tax[n] OPTIONAL

Use this parameter group to provide a breakdown of tax types, amount per tax type, and rate per tax type included in order.taxAmount.

order.tax[n].amount Decimal OPTIONAL

The tax amount included in this order for the tax type.

Data is a string that consists of the characters 0-9 and '.' and represents a valid decimal number.

Min length: 1 Max length: 14
order.tax[n].type String OPTIONAL

The type of tax included in the order amount.

The correct value as used by your acquirer may have to be provided. Contact your payment service provider for details.

Data can consist of any characters

Min length: 1 Max length: 50
order.taxAmount Decimal OPTIONAL

The total tax amount for the order.

If you do not provide this value but provide line item data, then this amount is calculated as the sum of the item.quantity times the item.unitTaxAmount for all the line items (total tax amount).
If you provide both this value and line item data, then the order.taxAmount MUST equal the total tax amount.

Data is a string that consists of the characters 0-9 and '.' and represents a valid decimal number.

Min length: 1 Max length: 14
order.taxRegistrationId String OPTIONAL

Your tax registration identifier provided by the Federal/National tax authority (for example, federal tax identification number, ABN).

If you are a Canadian merchant, use this field to provide your Tax Registration ID for paying Harmonized Sales Tax (HST) or Goods and Services Tax (GST) collected by the Canada Revenue Agency.

Data can consist of any characters

Min length: 1 Max length: 30
order.id String REQUIRED

A unique identifier for this order to distinguish it from any other order you create.

Use this identifier when referring to this order in subsequent transactions and in retrieval operations. This value must be unique for every order you create using your merchant profile.

Data can consist of any characters

Min length: 1 Max length: 40
order.notificationUrl Url OPTIONAL

The URL to which the gateway will send Webhook notifications when an order is created or updated.

To receive notifications at this URL, you must enable Webhook notifications in Merchant Administration. Ensure the URL is HTTPS

Ensure that the URL begins with 'https' and is longer than 11 characters.

partnerSolutionId String OPTIONAL

If, when integrating with the gateway, you are using a solution (e.g. a shopping cart or e-commerce solution) provided, supported or certified by your payment service provider, enter the solution ID issued by your payment service provider here.

If your payment service provider has not provided you with a solution ID, you should ignore this field.

Data can consist of any characters

Min length: 1 Max length: 40
risk OPTIONAL

Information relevant to risk assessment.

risk.bypassMerchantRiskRules Enumeration OPTIONAL

The risk rules you wish to bypass when performing risk assessment for an order.

Value must be a member of the following list. The values are case sensitive.

ALL
shipping OPTIONAL

Information on the shipping address including the contact details of the addressee.

shipping.address OPTIONAL

The address to which the goods contained in this order are being shipped.

This data may be used to qualify for better interchange rates on corporate purchase card transactions.

shipping.address.city String OPTIONAL

The city portion of the address.

Data can consist of any characters

Min length: 1 Max length: 100
shipping.address.company String OPTIONAL

The name of the company associated with this address.

Data can consist of any characters

Min length: 1 Max length: 100
shipping.address.country Upper case alphabetic text OPTIONAL

The 3 letter ISO standard alpha country code of the address.

Data must consist of the characters A-Z

Min length: 3 Max length: 3
shipping.address.postcodeZip Alphanumeric + additional characters OPTIONAL

The post code or zip code of the address.

Data may consist of the characters 0-9, a-z, A-Z, ' ', '-'

Min length: 1 Max length: 10
shipping.address.stateProvince String OPTIONAL

The state or province of the address.

Data can consist of any characters

Min length: 1 Max length: 20
shipping.address.street String OPTIONAL

The first line of the address.

For example, this may be the street name and number, or the Post Office Box details.

Data can consist of any characters

Min length: 1 Max length: 100
shipping.address.street2 String OPTIONAL

The second line of the address (if provided).

Data can consist of any characters

Min length: 1 Max length: 100
shipping.contact OPTIONAL

Details of the contact person at the address the goods will be shipped to.

shipping.contact.email Email OPTIONAL

The contact person's email address.

The field format restriction ensures that the email address is longer than 3 characters and adheres to a generous subset of valid RFC 2822 email addresses.

Ensures that the email address is longer than 3 characters and adheres to a generous subset of valid RFC 2822 email addresses

shipping.contact.firstName String OPTIONAL

The first name of the person to whom the order is being shipped.

Data can consist of any characters

Min length: 1 Max length: 50
shipping.contact.lastName String OPTIONAL

The last name or surname of the person to whom the order is being shipped.

Data can consist of any characters

Min length: 1 Max length: 50
shipping.contact.mobilePhone String OPTIONAL

The contact person's mobile phone or cell phone number.

Data can consist of any characters

Min length: 1 Max length: 20
shipping.contact.phone String OPTIONAL

The phone number of the person to whom the order is being shipped.

Data can consist of any characters

Min length: 1 Max length: 20
shipping.method Enumeration OPTIONAL

The shipping method code to indicate the time frame and the priority of the order.

Value must be a member of the following list. The values are case sensitive.

ELECTRONIC

Electronic delivery.

GROUND

Ground (4 or more days).

OVERNIGHT

Overnight (next day).

PRIORITY

Priority (2-3 days).

SAME_DAY

Same day.

transaction OPTIONAL

Information about this transaction.

transaction.acquirer OPTIONAL

Additional information to be passed to acquirer.

transaction.acquirer.customData String OPTIONAL

Additional information requested by the acquirer which cannot be passed using other available data fields.

This field must not contain sensitive data.

Data can consist of any characters, but sensitive data will be rejected

Min length: 1 Max length: 2048
transaction.acquirer.transactionId String OPTIONAL

This is the value provided to the acquirer to identify the order.

Ideally this will be the order.id, however if that value cannot be used directly, it will be transformed by the gateway to a unique value that the acquirer will accept. If that behavior is not suitable, you can directly provide the value in this field and it will be passed to the acquirer. You then take responsibility for its correctness. (Note: Contact your payment provider to see if this is supported for your acquirer).

Data can consist of any characters, but sensitive data will be rejected

Min length: 1 Max length: 100
transaction.frequency Enumeration OPTIONAL

Indicates the frequency of the transaction offered to the payer.

Value must be a member of the following list. The values are case sensitive.

INSTALLMENT

Indicates an installment transaction where the payer authorizes you to deduct multiple payments over an agreed period of time for a single purchase.

RECURRING

Indicates a recurring transaction where the payer authorizes you to automatically debit their accounts for bill or invoice payments.

SINGLE

Indicates a single transaction where a single payment is used to complete the order.

transaction.merchantNote String OPTIONAL

Your note about this transaction.

Data can consist of any characters

Min length: 1 Max length: 250
transaction.reference String OPTIONAL

An optional identifier for this transaction.

Data can consist of any characters

Min length: 1 Max length: 40
transaction.source Enumeration OPTIONAL

Indicates the source through which you received the transaction.

Value must be a member of the following list. The values are case sensitive.

CALL_CENTRE

Transaction conducted via a call centre.

CARD_PRESENT

Transaction where the card is presented to the merchant.

INTERNET

Transaction conducted over the Internet.

MAIL_ORDER

Transaction received by mail.

MOTO

Transaction received by mail or telephone.

TELEPHONE_ORDER

Transaction received by telephone.

VOICE_RESPONSE

Transaction conducted by a voice/DTMF recognition system.

transaction.transit OPTIONAL

Only use the functionality provided in this parameter group if you are a merchant with a card scheme approved Merchant Category Code for Aggregated Transit Fare Collection functionality.

transaction.transit.fareCollection Enumeration REQUIRED

The Aggregated Transit Fare Collection functionality allows your payers to use their contactless card as both the method of payment as well as their travel ticket.

In this case you will be allowed to aggregate these contactless payments for transit fares within limitations (time periods, amounts) as specified by the card schemes.
Use the field to indicate the purpose of this transaction.

Value must be a member of the following list. The values are case sensitive.

AGGREGATION_ACROSS_TRIPS

Indicates that an Authorization is made for a fixed amount but that you intend to capture a (yet unknown) amount for more than one transit fare. It allows you to aggregate the transit fares for trips payed for using the same card within the limitations specified by the card schemes. The authorization may not be reversed.

DEBT_RECOVERY

Indicates that this Authorization has been initiated by you to collect an outstanding transit fare. The card schemes place limitations on when and how often you can attempt to clear a transit fare debt. The Authorization must be a Card Not Present transaction . Do not use this flag for payments initiated by the payer to pay off fare debts. In this case submit an Authorization without this flag.

transaction.transit.transportationMode Enumeration REQUIRED

Provide the transport mode used by the payer for the first trip when fare collection is aggregated across one or more trips as well as on debt recovery transactions.

Value must be a member of the following list. The values are case sensitive.

CABLE_CAR

Cable Car

COACH

Coach

COMMUTER_TRAIN

Commuter Train

EXPRESS_COMMUTER_TRAIN

Express Commuter Train

FUNICULAR_TRAIN

Funicular Train

HIGH_SPEED_TRAIN

High Speed Train

INTERURBAN_BUS

Interurban Bus

INTER_CITY

Inter City

LIGHT_TRAIN_MASS_TRANSIT

Light Train Mass Transit

LOCOMOTIVE

Locomotive

OTHER

Other

PARA_TRANSIT

Para Transit

PARKING

Parking

POWERED_MOTOR_VEHICLE

Powered Motor Vehicle

REGIONAL_TRAIN

Regional Train

RURAL_BUS

Rural Bus

SELF_DRIVE_VEHICLE

Self Drive Vehicle

TAXI

Taxi

TOLL

Toll

TRAILER

Trailer

TRAIN

Train

URBAN_BUS

Urban Bus

WATER_BORNE_VEHICLE

Water Borne Vehicle

userId String OPTIONAL

The person who initiated this transaction.

For Merchant Administration, the person is identified by their logon name.

Data can consist of any characters

Min length: 1 Max length: 256

Response

Fields

correlationId String CONDITIONAL

A transient identifier for the request, that can be used to match the response to the request.

The value provided is not validated, does not persist in the gateway, and is returned as provided in the response to the request.

Data can consist of any characters

Min length: 1 Max length: 100
lineOfBusiness String CONDITIONAL

Your payment service provider might have configured your merchant profile to support several lines of business.

Each line of business can have different payment parameters, such as bank account, supported cards or such.

For example, lineOfBusiness = TICKET_SALES can have a different bank account from lineOfBusiness = MERCHANDISING. One line of business on your profile might be "null". To use that, do not provide the lineOfBusiness field.

Data can consist of any characters except space

Min length: 1 Max length: 100
merchant Alphanumeric + additional characters ALWAYS PROVIDED

The unique identifier issued to you by your payment provider.

This identifier can be up to 12 characters in length.

Data may consist of the characters 0-9, a-z, A-Z, '-', '_'

Min length: 1 Max length: 40
result Enumeration ALWAYS PROVIDED

A system-generated high level overall result of the transaction/operation.

Value must be a member of the following list. The values are case sensitive.

FAILURE

The operation was declined or rejected by the gateway, acquirer or issuer

PENDING

The operation is currently in progress or pending processing

SUCCESS

The operation was successfully processed

UNKNOWN

The result of the operation is unknown

session.id ASCII Text ALWAYS PROVIDED

The session identifier for the hosted payment.

Include this identifier in the checkout request if you wish to return the payer to the merchant's website after completing the payment attempt.

Data consists of ASCII characters

Min length: 31 Max length: 35
session.updateStatus Enumeration ALWAYS PROVIDED

A summary of the outcome of the last attempt to modify the session.

In order to perform an operation using this session this value must be SUCCESS.

Value must be a member of the following list. The values are case sensitive.

FAILURE

The last attempt to place data into the session was unsuccessful. The session may contain invalid data. A request operation using this session will be rejected by the payment gateway.

NO_UPDATE

No attempt has been made to place data into the session. A request operation using this session will be rejected by the payment gateway.

SUCCESS

The last attempt to update the session was successful. You may submit a request operation using this session.

session.version ASCII Text ALWAYS PROVIDED

Use this field to implement optimistic locking of the session content.

Do this if you make business decisions based on data from the session and wish to ensure that the same data is being used for the request operation.

To use optimistic locking, record session.version when you make your decisions, and then pass that value in session.version when you submit your request operation to the gateway.

See Making Business Decisions Based on Session Content.

Data consists of ASCII characters

Min length: 10 Max length: 10
successIndicator ASCII Text ALWAYS PROVIDED

An identifier to determine the success of the hosted payment.

The gateway will return this value in the resultIndicator parameter (appended to the returnUrl) for successful payments only. See Obtain the Payment Result section.

Data consists of ASCII characters

Min length: 16 Max length: 32

Errors

error

Information on possible error conditions that may occur while processing an operation using the API.

error.cause Enumeration

Broadly categorizes the cause of the error.

For example, errors may occur due to invalid requests or internal system failures.

Value must be a member of the following list. The values are case sensitive.

INVALID_REQUEST

The request was rejected because it did not conform to the API protocol.

REQUEST_REJECTED

The request was rejected due to security reasons such as firewall rules, expired certificate, etc.

SERVER_BUSY

The server did not have enough resources to process the request at the moment.

SERVER_FAILED

There was an internal system failure.

error.explanation String

Textual description of the error based on the cause.

This field is returned only if the cause is INVALID_REQUEST or SERVER_BUSY.

Data can consist of any characters

Min length: 1 Max length: 1000
error.field String

Indicates the name of the field that failed validation.

This field is returned only if the cause is INVALID_REQUEST and a field level validation error was encountered.

Data can consist of any characters

Min length: 1 Max length: 100
error.supportCode String

Indicates the code that helps the support team to quickly identify the exact cause of the error.

This field is returned only if the cause is SERVER_FAILED or REQUEST_REJECTED.

Data can consist of any characters

Min length: 1 Max length: 100
error.validationType Enumeration

Indicates the type of field validation error.

This field is returned only if the cause is INVALID_REQUEST and a field level validation error was encountered.

Value must be a member of the following list. The values are case sensitive.

INVALID

The request contained a field with a value that did not pass validation.

MISSING

The request was missing a mandatory field.

UNSUPPORTED

The request contained a field that is unsupported.

result Enumeration

A system-generated high level overall result of the operation.

Value must be a member of the following list. The values are case sensitive.

ERROR

The operation resulted in an error and hence cannot be processed.