> ## Documentation Index
> Fetch the complete documentation index at: https://docs.synctera.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Lookup 3DS

> Using device collection data, performs a lookup for an External Card Transfer 3DS authentication. The results will indicate whether the transfer is successfully authenticated or if a 3DS challenge is required.




## OpenAPI

````yaml openapi-v2.json post /external_cards/lookup_3ds
openapi: 3.0.3
info:
  description: >
    <h2>Let's build something great.</h2><p>Welcome to the official reference
    documentation for Synctera APIs. Our APIs are the best way to automate your
    company's banking needs and are designed to be easy to understand and
    implement.</p><p>We're continuously growing this library and what you see
    here is just the start, but if you need something specific or have a
    question, <a class='text-blue-600' href='https://synctera.com/contact'
    target='_blank' rel='noreferrer'>contact us</a>.</p>
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.html
  title: Synctera API
  version: v2
servers:
  - description: Production
    url: https://api.synctera.com/v2
  - description: Sandbox (no real world financial impact)
    url: https://api-sandbox.synctera.com/v2
security:
  - bearerAuth: []
tags:
  - description: Create and manage wire transfers
    name: Wires
  - description: Simulate receiving Wire transactions and returns
    name: Wire Transaction Simulations
  - description: >-
      Create and manage same currency and multi-currency international wire
      transfers
    name: International Wires (alpha)
  - description: Create and manage payments
    name: ACH
  - description: Simulate receiving ACH transactions and returns
    name: ACH Transaction Simulations
  - description: Configure vendor secrets for egress requests
    name: Egress Gateway Vendor Secret CRUD API
  - description: Configure webhook secrets for egress requests
    name: Egress Gateway Webhook Secret CRUD API
  - description: Create and manage documents.
    name: Documents
  - description: Create and manage EFT Canada transfers
    name: EFT Canada (Beta)
  - description: Create and manage sweep configurations
    name: Configs
  - description: Request to create and manage edd
    name: Trust
  - description: Requests to calculate and manage CRR
    name: CRR
  - description: Requests to issue and manage cards
    name: Cards
  - description: Push and pull from cards
    name: External Cards
  - description: Bulk card issuance
    name: Bulk Issuance
  - description: Requests to generate simulated transactions
    name: Card Transaction Simulations
  - description: Requests to generate simulated webhooks
    name: Card Webhook Simulations
  - description: Requests to create and manage card disputes
    name: Card Disputes
  - description: Requests to simulate card payments
    name: Card Simulations
  - description: Create and manage accounts
    name: Accounts
  - description: Create and manage transactions
    name: Transactions (beta)
  - description: Create and manage spending controls
    name: Spend Controls (beta)
  - description: |
      Requests to create and manage fees
    name: Fees (beta)
  - description: |
      Requests to create and manage Rewards
    name: Rewards (beta)
  - description: Create and manage disputes
    name: Disputes
  - description: Create and manage tenant-level transaction limits
    name: Tenant Limits (beta)
  - description: |
      Requests to create and manage batch payments
    name: Batch Payments (alpha)
  - description: Manage negative balance processes
    name: Negative Balance
  - description: |
      Manage fee products and fee configs for automated fee collection
    name: Fee Products
  - description: |
      Manage reward products and reward configs for automated cashback rewards
    name: Reward Products
  - description: Create and manage holds
    name: Hold
  - description: Create and manage transactions
    name: Transactions
  - description: Create and manage transactions
    name: Transactions (internal)
  - description: Create and manage scheduled transactions
    name: Scheduled Transactions (internal)
  - description: Create and manage spending controls
    name: Spend Controls
  - description: Create and manage tenant configurations
    name: Tenant Configs
  - description: Lookup merchant information
    name: Merchants
  - description: See balance history
    name: BalanceHistory
  - description: API for effective balances
    name: effective_balances
  - description: Transaction lines API
    name: transactions
  - description: Requests for risk evaluation and decisioning
    name: Risk Evaluations
  - description: Requests for transaction risk detection
    name: Transaction risk
  - description: Configuration and management of transaction monitoring rules
    name: Transaction Monitoring
  - description: Request to create and manage deposits using remote deposit capture
    name: Remote Check Deposit
  - description: Request to create and manage rdc configurations
    name: RDC Config
  - description: Apple Pay APIs
    name: Apple Pay
  - description: Requests to create and manage webhooks
    name: Webhooks
  - description: Requests to generate simulated transactions
    name: Cash Transaction Simulations (alpha)
  - description: >-
      Testing endpoints to simulate in-store cash deposits. Available in sandbox
      environments only.
    name: In-Store Cash Deposit Simulations
  - description: Create and manage barcodes for in-store cash deposits
    name: In-Store Cash Deposits
  - description: Create and manage Cash Order and Cash Deposit transfers
    name: Cash Orders and Deposits (alpha)
  - description: FDX authentication and data transfer using Plaid Core Exchange
    name: Plaid Core Exchange (beta)
  - description: Request to create and manage payment_schedules
    name: Cronut
  - description: Request to create and manage statements
    name: Statements
  - description: Create and manage Synctera Pay templates
    name: SyncteraPay
  - description: Account Template
    name: Account Templates
  - description: >-
      Account programs define configurations for payment rails and transaction
      capabilities across different account types.
    name: Account Programs
  - description: Requests to create and manage account products, including fees, interest.
    name: Account Products
  - description: |
      The internal account resource is used for managing links to internal
      accounts where the funds are managed by integrators.
    name: Internal Accounts
  - description: Requests to create and manage API keys
    name: API Keys
  - description: Requests to manage banks
    name: Banks
  - description: Requests to create and manage customers
    name: Customers
  - description: >
      A natural person (individual human) that is relevant to the Synctera
      platform in some way: e.g. a personal customer or a director/officer/owner
      of a business.
    name: Persons
  - description: >
      A legal entity (corporation, partnership, etc.) that is relevant to the
      Synctera platform in some way: a business customer or some other
      organization that has an ownership share in such a business customer.
    name: Businesses
  - description: >
      The fintech profile document resource is used to track the approval status
      of any documents

      which must be reviewed by a bank. This includes regulatory documents which
      will be presented

      to the fintech's end users, and also any documents that help the bank
      understand the

      fintech's fitness for duty.
    name: Fintech Profile
  - description: |
      The disclosures resource is used to track the status of disclosures and
      ensure that all parties have been shown the necessary disclosures to meet
      regulatory obligations.
    name: Disclosures
  - description: |
      The Disclosures resource is used to track the status of disclosures and
      ensure that customers have been shown the necessary disclosures to meet
      regulatory obligations.
    name: Disclosures (deprecated)
  - description: |
      The External Account resource is used for managing links to accounts
      that operate outside of the Synctera ecosystem.
    name: External Accounts
  - description: History
    name: History
  - description: Requests to initiate customer verification.
    name: KYC Verification (deprecated)
  - description: Requests to initiate customer verification.
    name: KYC/KYB Verifications
  - description: Requests to screen parties against sanctions watchlists
    name: Sanctions Screening
  - description: Requests to manage monitoring subscriptions and alerts for customers.
    name: Monitoring
  - description: Requests to manage partners
    name: Partners
  - description: Request to create and manage party groups and party group members
    name: Party Groups
  - description: Requests to create and manage roles
    name: Roles
  - description: >
      Represents the relationships between parties. A relationship can exist
      between personal customers, business customers, or non-customer
      persons/organizations.
    name: Relationships
  - description: Request to create and manage users
    name: Users
  - description: Request to enroll, renew, or cancel watchlist monitors
    name: Watchlist (deprecated)
  - description: Retrieve user identity information
    name: Identity
  - description: Endpoints for modifying or fetching posting dates
    name: Posting Dates
  - description: Admin API for Middesk configuration using the tenants API keys.
    name: Middesk
  - description: Requests to search and manage compliance searches
    name: Compliance Searches
  - description: Requests to configure vendors.
    name: Vendor Configurations
  - description: Requests to create and manage notes
    name: Notes
  - description: >
      Represents the compliance rules that are used to verify certain kinds of
      money movement.
    name: Compliance Rules
  - description: Requests to create licenses
    name: Licenses
  - description: >-
      Used to configure bank accounts for which synctera accounts are considered
      a "subledger" to
    name: Bank Account
  - description: Requests to search financial institutions
    name: Institutions (Beta)
  - description: Requests to manage addresses
    name: Addresses
  - description: Requests to Admins to grant permissions to user
    name: Request Permissions
  - description: Manage contacts for bank and fintech partners
    name: Contacts
  - description: Requests to create and manage personal ID configurations
    name: Personal ID Configuration
  - description: >-
      Migration mappings associate resources from an old tenant identity with a
      new tenant identity.
    name: Migration Mappings
  - description: Create a credit application.
    name: Applications (beta)
  - description: Billing period summaries
    name: Billing Period Summaries
  - description: Customer Service Details for disputes and billing inquiries
    name: Customer Service Details
  - description: Billing rates
    name: Billing Rates
  - description: Rates
    name: Rates
  - description: Lending Config
    name: Lending Config
  - description: Manage credit disputes
    name: Credit Disputes
  - description: Payments related to lending accounts
    name: Payments
  - description: Tenant Config
    name: Tenant Config
  - description: Bank Delinquency Configuration
    name: Bank Delinquency Configuration
  - description: >-
      Per bank/partner account-type mapping to FFIEC collateral codes used for
      regulatory call report furnishment.
    name: Collateral Code Configuration
  - description: >-
      Rules that map a posted payment transaction (bank/partner + transaction
      attributes) to a regulatory payment code. NULL match columns act as
      wildcards.
    name: Payment Code Configuration
  - description: Autopay configuration management for lending accounts
    name: Autopay Configs
  - description: Autopay payment records for billing periods
    name: Autopays
  - description: Configuration for mapping LoanPro events to Payola transaction parameters
    name: LoanPro Transaction Event Config
  - description: >-
      Aggregated write-off amounts for lending accounts, computed from posted
      transactions.
    name: Write Off Amounts
paths:
  /external_cards/lookup_3ds:
    post:
      tags:
        - External Cards
      summary: Lookup 3DS
      description: >
        Using device collection data, performs a lookup for an External Card
        Transfer 3DS authentication. The results will indicate whether the
        transfer is successfully authenticated or if a 3DS challenge is
        required.
      operationId: lookup3DS
      parameters:
        - $ref: '#/components/parameters/idempotency_key'
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/lookup_3ds_request'
        description: Details of the External Card Transfer 3DS authentication lookup.
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/lookup_3ds_response'
          description: External Card Transfer 3DS authentication lookup complete
        '400':
          $ref: '#/components/responses/bad_request'
        '401':
          $ref: '#/components/responses/unauthorized'
        '403':
          $ref: '#/components/responses/forbidden'
        '422':
          $ref: '#/components/responses/unprocessable_entity'
        '500':
          $ref: '#/components/responses/internal_server_error'
components:
  parameters:
    idempotency_key:
      description: >-
        An idempotency key is an arbitrary unique value generated by client to
        detect subsequent retries of the same request. It is recommended that a
        UUID or a similar random identifier be used as an idempotency key. A
        different key must be used for each request, unless it is a retry.
      in: header
      name: Idempotency-Key
      schema:
        example: 7d943c51-e4ff-4e57-9558-08cab6b963c7
        type: string
  schemas:
    lookup_3ds_request:
      discriminator:
        mapping:
          BROWSER:
            $ref: '#/components/schemas/lookup_3ds_request_browser'
          SDK:
            $ref: '#/components/schemas/lookup_3ds_request_sdk'
        propertyName: device_channel
      oneOf:
        - $ref: '#/components/schemas/lookup_3ds_request_browser'
        - $ref: '#/components/schemas/lookup_3ds_request_sdk'
      type: object
    lookup_3ds_response:
      description: >-
        Details for an External Card Transfer 3-D Secure Authentication lookup
        response
      properties:
        challenge_payload:
          description: 3DS challenge payload, returned if challenge is required
          type: string
        challenge_url:
          description: 3DS challenge URL, returned if challenge is required
          format: uri
          type: string
        id:
          description: The unique identifier of the 3DS authentication
          example: 7d943c51-e4ff-4e57-9558-08cab6b963c7
          format: uuid
          type: string
        processor_transaction_id:
          description: Processor Transaction ID, returned if challenge is required
          type: string
        status:
          description: Status of the 3DS authentication
          enum:
            - SUCCESS
            - FAILED
            - CHALLENGE_REQUIRED
            - NOT_ENROLLED
            - UNKNOWN
          type: string
      required:
        - id
        - status
      type: object
    lookup_3ds_request_browser:
      allOf:
        - $ref: '#/components/schemas/lookup_3ds_request_base'
        - properties:
            device_details:
              $ref: '#/components/schemas/device_details'
          type: object
      description: >-
        Details for an External Card Transfer 3-D Secure Authentication lookup
        request using a browser
      title: Browser
      type: object
    lookup_3ds_request_sdk:
      allOf:
        - $ref: '#/components/schemas/lookup_3ds_request_base'
      description: >-
        Details for an External Card Transfer 3-D Secure Authentication lookup
        request using a SDK
      title: SDK
      type: object
    error:
      description: Synctera error responses in API v1 implement a custom error schema.
      properties:
        code:
          description: >
            A machine-readable string that identifies the error for programmatic
            use.
          example: BAD_REQUEST_BODY
          type: string
        detail:
          description: |
            A human-readable string explaining this particular error.
          example: 'Missing required fields: first_name, dob'
          type: string
        status:
          description: HTTP status code for this response
          example: 400
          type: integer
      title: Synctera error response
      type: object
    lookup_3ds_request_base:
      description: >-
        Details for an External Card Transfer 3-D Secure Authentication lookup
        request
      properties:
        authentication_indicator:
          enum:
            - PAYMENT
            - RECURRING
            - INSTALLMENT
          type: string
        device_channel:
          description: |
            Channel through which Device Data Collection was performed

            Channel | Description
            --- | ---
            `BROWSER` | Internet browser
            `SDK` | Mobile app
          enum:
            - BROWSER
            - SDK
          example: BROWSER
          type: string
        id:
          description: The unique identifier of the 3DS authentication
          example: 7d943c51-e4ff-4e57-9558-08cab6b963c7
          format: uuid
          type: string
        transaction_mode:
          enum:
            - MOBILE_DEVICE
            - TABLET_DEVICE
            - COMPUTER_DEVICE
          type: string
      required:
        - id
        - authentication_indicator
        - transaction_mode
        - device_channel
      type: object
    device_details:
      description: >-
        Optionally provided browser device details, used as a fallback in case
        there is an issue with Device Data Collection. Note that minimal field
        validation is performed.
      properties:
        color_depth:
          description: The device's color palette bit depth, in bits per pixel
          example: 24
          maximum: 99
          minimum: 1
          type: integer
        header:
          description: The exact contents of the browser's HTTP accept headers
          example: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
          type: string
        ip_address:
          description: The device's IP address (either IPv4 or IPv6 formats are acceptable)
          example: 1.12.123.255
          type: string
        java_enabled:
          description: >-
            If the browser has the ability to execute Java (value returned from
            `navigator.javaEnabled` property)
          type: boolean
        javascript_enabled:
          description: >-
            If the browser has the ability to execute JavaScript (value returned
            from `navigator.javaScriptEnabled` property)
          type: boolean
        language:
          description: The browser's language as defined in IETF BCP47
          example: en-US
          type: string
        screen_height:
          description: The total height of the device's screen, in pixels
          example: 1080
          maximum: 999999
          minimum: 1
          type: integer
        screen_width:
          description: The total width of the device's screen, in pixels
          example: 1920
          maximum: 999999
          minimum: 1
          type: integer
        timezone:
          description: The offset from UTC of the device's local timezone, in minutes
          example: -300
          maximum: 840
          minimum: -840
          type: integer
        user_agent:
          description: The exact contents of the HTTP user agent header
          example: >-
            Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML,
            like Gecko) Chrome/71.0.3578.98 Safari/537.36
          type: string
      required:
        - user_agent
        - header
        - javascript_enabled
        - java_enabled
        - language
        - color_depth
        - screen_height
        - screen_width
        - timezone
        - ip_address
      type: object
  responses:
    bad_request:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/error'
      description: Bad request
    unauthorized:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/error'
      description: Unauthorized
    forbidden:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/error'
      description: Forbidden
    unprocessable_entity:
      content:
        application/problem+json:
          schema:
            $ref: '#/components/schemas/error'
      description: Unprocessable entity request response
    internal_server_error:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/error'
      description: Internal server error
  securitySchemes:
    bearerAuth:
      bearerFormat: api_key
      scheme: bearer
      type: http

````