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OpenAPI Specification

openapi: 3.2.0
info:
  title: Fiserv CardPointe Gateway Refund API
  description: The CardPointe Gateway API provides a RESTful interface for integrating secure tokenization, payment processing, and reporting features into applications and websites. The API supports authorization, capture, void, refund, and inquiry operations, as well as customer profile management for storing payment credentials securely.
  version: 1.0.0
  contact:
    name: Fiserv Developer Support
    url: https://developer.fiserv.com/product/CardPointe
  termsOfService: https://www.fiserv.com/en/legal.html
servers:
- url: https://{site}-uat.cardconnect.com/cardconnect/rest
  description: UAT Environment
  variables:
    site:
      default: fts
      description: The site name provided during onboarding.
- url: https://{site}.cardconnect.com/cardconnect/rest
  description: Production Environment
  variables:
    site:
      default: fts
      description: The site name provided during onboarding.
security:
- basicAuth: []
tags:
- name: Refund
  description: Refund previously captured and settled transactions.
paths:
  /refund:
    put:
      operationId: refundTransaction
      summary: Fiserv Refund a settled transaction
      description: Processes a refund for a previously captured and settled transaction. Supports full and partial refunds.
      tags:
      - Refund
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RefundRequest'
      responses:
        '200':
          description: Refund processed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RefundResponse'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
components:
  schemas:
    RefundRequest:
      type: object
      description: Refund request payload.
      required:
      - merchid
      - retref
      properties:
        merchid:
          type: string
          description: The CardPointe merchant ID.
        retref:
          type: string
          description: The retrieval reference number of the transaction to refund.
        amount:
          type: string
          description: The refund amount. If omitted, a full refund is processed.
    ErrorResponse:
      type: object
      description: Error response payload.
      properties:
        respstat:
          type: string
          description: The response status (C for declined/error).
        respcode:
          type: string
          description: The error response code.
        resptext:
          type: string
          description: A human-readable error message.
    RefundResponse:
      type: object
      description: Refund response payload.
      properties:
        merchid:
          type: string
          description: The merchant identifier.
        retref:
          type: string
          description: The retrieval reference number.
        amount:
          type: string
          description: The refunded amount.
        respcode:
          type: string
          description: The response code.
        resptext:
          type: string
          description: The response text.
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic authentication using the CardPointe Gateway credentials.
externalDocs:
  description: CardPointe Gateway API Documentation
  url: https://developer.fiserv.com/product/CardPointe/docs/?path=docs%2FAPIs%2FCardPointeGatewayAPI.md