Mastercard Payment Gateway API Reference: Operations -
Version 79,
Protocol: NVP

Process ACS Result

Interprets the authentication response returned from the card Issuer's Access Control Server (ACS) after the cardholder completes the authentication process. The response indicates the success or otherwise of the authentication. The 3DS AuthId is required so that merchants can submit payloads multiple times without producing duplicates in the database.

URL https://evopaymentsmexico.gateway.mastercard.com/api/nvp/version/79
HTTP Method POST
Authentication This operation requires authentication via one of the following methods:
  • Certificate authentication.
  • To authenticate to the API two additional NVP parameters must be supplied in the request. Provide 'merchant.<your gateway merchant ID>' in the apiUsername field and your API password in the apiPassword field.

Request Parameters

apiOperation  String =PROCESS_ACS_RESULT FIXED

Existence
FIXED
Fixed value
PROCESS_ACS_RESULT
Validation Rules
Any sequence of zero or more unicode characters.
XSD type
string

merchant  Alphanumeric + additional characters = COMPULSORY

The unique identifier issued to you by your payment provider.
Existence
COMPULSORY
Fixed value
Validation Rules
Data may consist of the characters 0-9, a-z, A-Z, '-', '_'
XSD type
string
minimum length
1
maximum length
40

apiOperation  String =PROCESS_ACS_RESULT FIXED

Existence
FIXED
Fixed value
PROCESS_ACS_RESULT
Validation Rules
Any sequence of zero or more unicode characters.
XSD type
string

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.
Existence
OPTIONAL
Fixed value
Validation Rules
Data can consist of any characters
XSD type
string
minimum length
1
maximum length
100

merchant  Alphanumeric + additional characters = COMPULSORY

The unique identifier issued to you by your payment provider.
Existence
COMPULSORY
Fixed value
Validation Rules
Data may consist of the characters 0-9, a-z, A-Z, '-', '_'
XSD type
string
minimum length
1
maximum length
40

Response Parameters

3DSecureId  ASCII Text = Always Provided

A unique identifier supplied by the merchant for the authentication.
It is first defined in the check3DSEnrollment operation, and then included in subsequent operations.
It is not used when the authentication is performed externally.
Existence
Always Provided
Fixed value
Validation Rules
Data consists of ASCII characters
XSD type
string
minimum length
1
maximum length
64

merchant  Alphanumeric + additional characters = Always Provided

The unique identifier issued to you by your payment provider.
Existence
Always Provided
Fixed value
Validation Rules
Data may consist of the characters 0-9, a-z, A-Z, '-', '_'
XSD type
string
minimum length
1
maximum length
40

response   = Always Provided

A collection of information that is specific to responses from the API.
Fixed value

response.gatewayRecommendation  Enumeration = Always Provided

Indicates if this order will be blocked by the gateway based on rules configured by you or your payment service provider when you request that a payment is processed.
This assessment is based on what the gateway currently knows about this order. Use this value to determine whether or not you should proceed with performing further operations on the order. For example, requesting an Authorize, Capture, or Pay operation.
Existence
Always Provided
Fixed value
Validation Rules
XSD type
string
Value must be a member of the following list. The values are case sensitive.
DO_NOT_PROCEED
Do not proceed using this card.
PROCEED
Proceed using this card.

Response parameters are the same as 3DS: Retrieve 3DS Result

error   = CONDITIONAL

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

error.cause  Enumeration = CONDITIONAL

Broadly categorizes the cause of the error.
For example, errors may occur due to invalid requests or internal system failures.
Fixed value
Validation Rules
XSD type
string
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 = CONDITIONAL

Textual description of the error based on the cause.
This field is returned only if the cause is INVALID_REQUEST or SERVER_BUSY.
Fixed value
Validation Rules
Data can consist of any characters
XSD type
string
minimum length
1
maximum length
1000

error.field  String = CONDITIONAL

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.
Fixed value
Validation Rules
Data can consist of any characters
XSD type
string
minimum length
1
maximum length
100

error.supportCode  String = CONDITIONAL

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.
Fixed value
Validation Rules
Data can consist of any characters
XSD type
string
minimum length
1
maximum length
100

error.validationType  Enumeration = CONDITIONAL

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.
Fixed value
Validation Rules
XSD type
string
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 = CONDITIONAL

A system-generated high level overall result of the operation.
Fixed value
Validation Rules
XSD type
string
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.

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