# Create Plaid Link Token

Used to create a Plaid Link token to use with the Plaid Link UI.


- Host Direct

See the Integration Methods and URLs Section sections of the Development Quick Start guide for details regarding each processing option.


Endpoint: POST /ach/plaid/link_token/create
Version: 1.7.43
Security: AccessToken

## Header parameters:

  - `InterfaceVersion` (string, required)
    Refers to the version of the program or application that is sending requests to Shift4. The following special characters are not allowed:  $ % : ^ - ~  , ? “ ” ‘ ’ { } [ ] \ + =
    Example: "2.1"

  - `InterfaceName` (string, required)
    Refers to the name of the program or application that is sending requests to Shift4. This should be the name of the program that you purchased or created. The following special characters are not allowed:  $ % : ^ - ~ `  , ? “ ” ‘ ’ { } [ ] \ + =
    Example: "ForwardPOS"

  - `CompanyName` (string, required)
    Refers to the vendor or partner that designed and certified the interface. The information you use in this field should match what Shift4 has on file or what was agreed upon in your Integration Plan. The following special characters are not allowed:  $ % : ^ - ~ `  , ? “ ” ‘ ’ { } [ ] \ + =
    Example: "PAWS"

  - `AccessToken` (string, required)
    A security credential used to authenticate API requests and all i4Go® authorizeClient/preauthorizeClient requests. An Access Token is the alias for the merchant account and interface being used. The Access Token is required in all requests except an Access Token Exchange request, which generates an Access Token using an  and .
    Example: "EA79FB05-3AA7-4500-AF9A-73F986FF2C1D"

## Request fields (application/json):

  - `dateTime` (string, required)
    The date and time in ISO 8601 format including the timezone offset (yyyy-mm-ddThh:mm:ss.nnn+hh:mm).

Must be sent as the local date/time of the merchant. For example, a request processed at a merchant in the Pacific time zone at 9:18am on April 15th 2021 would be sent as 2021-04-15T09:18:23.283-07:00

  - `plaid` (object, required)

  - `plaid.client_user_id` (string, required)
    A unique ID representing the end user. Typically this will be a user ID number from your application. Personally identifiable information, such as an email address or phone number, should not be used in the client_user_id.

  - `plaid.language` (string)
    The language that Link should be displayed in. If no language is sent it will default to English.

Value | Description
------|-------------
da    | Danish
nl    | Dutch 
en    | English
et    | Estonian
fr    | French
de    | German
it    | Italian
lv    | Latvian
lt    | Lithuanian
no    | Norwegian
po    | Polish
ro    | Romanian
es    | Spanish
se    | Swedish
    Enum: "da", "nl", "en", "et", "fr", "de", "it", "lv", "lt", "no", "po", "ro", "es", "se"

  - `plaid.redirectUrl` (string)
    Contains the URL to which the browser should be redirected.

## Response 200 fields (application/json):

  - `result` (array)

  - `result.dateTime` (string)
    The date and time in ISO 8601 format including the timezone offset (yyyy-mm-ddThh:mm:ss.nnn+hh:mm).

Must be sent as the local date/time of the merchant. For example, a request processed at a merchant in the Pacific time zone at 9:18am on April 15th 2021 would be sent as 2021-04-15T09:18:23.283-07:00

  - `result.merchant` (object)

  - `result.merchant.mid` (number)
    The merchant ID associated with the merchant account.

  - `result.merchant.name` (string)
    The merchant’s business name as configured with Shift4.

  - `result.transaction` (object)

  - `result.transaction.authSource` (string)
    In a response, a code returned by the processor to indicate which host issued the response.

Value  | Description       
-------|----------------------------
A      | APM (Online)
    Enum: "A"

  - `result.transaction.responseCode` (string)
    Code indicating the Shift4 host response.        

Value  | Description | Details
-------|-------------|--------
S      | Success     | The Plaid link token request was successful.
F      | Fail        | The Plaid link token request was unsuccessful.
    Enum: "S", "F"

  - `result.plaid` (object)

  - `result.plaid.link_token` (string)
    Plaid Link Token

  - `result.plaid.expiration` (string)
    Plaid Link Token Expiration

  - `result.plaid.client_user_id` (string)
    A unique ID representing the end user. Typically this will be a user ID number from your application. Personally identifiable information, such as an email address or phone number, should not be used in the client_user_id.

  - `result.server` (object)

  - `result.server.name` (string)
    The name of the server that processed the request.

## Response 400 fields (application/json):

  - `result` (array)
    Example: [{"dateTime":"2023-02-08T09:18:23.283-07:00","error":{"code":40102,"severity":"Info","shortText":"Invalid Param","longText":"Client request missing field"},"server":{"name":"TM01CE"}}]

  - `result.dateTime` (string)
    The date and time in ISO 8601 format including the timezone offset (yyyy-mm-ddThh:mm:ss.nnn+hh:mm).

Must be sent as the local date/time of the merchant. For example, a request processed at a merchant in the Pacific time zone at 9:18am on April 15th 2021 would be sent as 2021-04-15T09:18:23.283-07:00

  - `result.error` (object)

  - `result.error.code` (integer)
    Code indicating the type of error that occurred. Refer to the [Error Codes](/guides/appendices/error-codes) section of this document for more details.

  - `result.error.severity` (string)
    Severity level of the error.

| Severity | Description                                                       |
| -------- | ----------------------------------------------------------------  |
| Info     | Action not required - Data input/formatting is incorrect          |
| Error    | Action may be required - Communication, timeout or network issue  |
| Alert    | Action required - System issue                                    |
    Enum: "Info", "Error", "Alert"

  - `result.error.shortText` (string)
    Abbreviated error message that is always returned if an error condition exists

  - `result.error.longText` (string)
    Extended error message that is returned if an error condition exists.

  - `result.server` (object)

  - `result.server.name` (string)
    The name of the server that processed the request.

## Response 504 fields (application/json):

  - `result` (array)
    Example: [{"dateTime":"2023-02-08T09:18:23.283-07:00","error":{"code":64002,"severity":"Error","shortText":"Timed Out","longText":"Connection Timeout"},"server":{"name":"TM01CE"}}]

  - `result.dateTime` (string)
    The date and time in ISO 8601 format including the timezone offset (yyyy-mm-ddThh:mm:ss.nnn+hh:mm).

Must be sent as the local date/time of the merchant. For example, a request processed at a merchant in the Pacific time zone at 9:18am on April 15th 2021 would be sent as 2021-04-15T09:18:23.283-07:00

  - `result.error` (object)

  - `result.error.code` (integer)
    Code indicating the type of error that occurred. Refer to the [Error Codes](/guides/appendices/error-codes) section of this document for more details.

  - `result.error.severity` (string)
    Severity level of the error.

| Severity | Description                                                       |
| -------- | ----------------------------------------------------------------  |
| Info     | Action not required - Data input/formatting is incorrect          |
| Error    | Action may be required - Communication, timeout or network issue  |
| Alert    | Action required - System issue                                    |
    Enum: "Info", "Error", "Alert"

  - `result.error.shortText` (string)
    Abbreviated error message that is always returned if an error condition exists

  - `result.error.longText` (string)
    Extended error message that is returned if an error condition exists.

  - `result.server` (object)

  - `result.server.name` (string)
    The name of the server that processed the request.