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OpenAPI Specification

openapi: 3.2.0
info:
  title: Check Services Stop Payments API
  description: Use the Check Services API to place a stop payment on commercial checking accounts or retrieve check details with the option to include check image.
  contact:
    name: KeyBank Developer Support
    email: embedded_banking_support@keybank.com
  version: 1.1.1
servers:
- url: https://partner-api-qv.key.com
- url: https://partner-api.key.com
security:
- bearerAuth: []
tags:
- name: StopPayments
  description: Place new stop payments
paths:
  /commercial/checks/v1/stops/place:
    post:
      tags:
      - StopPayments
      summary: Place a stop payment
      operationId: PlaceStopPayments
      description: Places a stop payment for an account using  an account number and check number. You can only stop a payment between the hours of 06:00 a.m. and 11:59 p.m. EST.
      security:
      - bearerAuth: []
      parameters:
      - name: X-CorrelationId
        in: header
        schema:
          type: string
        required: false
        description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
      requestBody:
        required: true
        description: Request parameters to place stop payment requests.
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/StopPaymentPlaceRequest'
            examples:
              StopPlacedSingleCheck:
                summary: Stop Place Request Single Check
                value:
                  accountNumber: '12345678910'
                  checkAmount: 12.12
                  issueDate: '2026-02-14'
                  checkNumberStart: 8940
                  description: Stop payment for issued check number
              StopPlacedCheckRange:
                summary: Stop Place Request Check Range
                value:
                  accountNumber: '12345678910'
                  checkAmount: 12.12
                  issueDate: '2026-02-14'
                  checkNumberStart: 8940
                  checkNumberEnd: 8963
                  description: Stop payment for issued check range
      responses:
        '200':
          description: Successful response with stop payment records
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StopPaymentPlaceResponse'
              examples:
                StopPlaced:
                  summary: Successful Stop Placed Response
                  value:
                    stopPayments:
                      accountNumber: '12345678910'
                      checkNumberStart: 8940
                      checkNumberEnd: 8963
                      checkAmount: 12.1
                      expirationDate: '2026-09-14'
                      description: Stop payment for issued check range
                      placedDate: '2026-03-14'
                      issueDate: '2026-02-14'
        '202':
          description: The stop payment request was accepted and submitted for processing, but final confirmation was not available before the response timeout. Do not assume the request failed and there is not a need to immediately resubmit the same stop payment request. The original request may still complete successfully. If the same request is submitted again after processing completes, the API will return a 409 Duplicate Stop response indicating the first request completed successfully.  Retain the X-CorrelationId for tracking or support.
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                type: object
                properties:
                  metadata:
                    $ref: '#/components/schemas/ResponseMetadata'
              example:
                metadata:
                  messages:
                  - code: STOP-Place-202-processing
                    message: Your request for placing a stop is accepted and is still being processed.
        '400':
          description: Validation failure on request payload
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend service
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: /commercial/checks/v1/stops/place
                ServiceError:
                  metadata:
                    messages:
                    - code: STOP-Place-400-accountNumber
                      message: accountNumber must be numeric
        '401':
          description: Unauthorized request
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Received request is unauthorized, please provide valid credentials
                TransactionId: 0635f201-8fbb-418f-b93a-138d5103e2b91348
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: /commercial/checks/v1/stops/place
        '403':
          description: Entitlements validation failed
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend service
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: /commercial/checks/v1/stops/place
                ServiceError:
                  metadata:
                    messages:
                    - code: Forbidden
                      message: Entitlements Validation Failed
        '404':
          description: Resource not found
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend service
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: /commercial/checks/v1/stops/place
                ServiceError:
                  metadata:
                    messages:
                    - code: STOP-Place-404-Not-Found
                      message: No static resource v1/stops/place
        '405':
          description: Requested method denied
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend service
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: /commercial/checks/v1/stops/place
                ServiceError:
                  metadata:
                    messages:
                    - code: STOP-Place-405-Method-Not-Allowed
                      message: Method 'Get' is not supported.
        '409':
          description: Duplicate stop
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend service
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: /commercial/checks/v1/stops/place
                ServiceError:
                  metadata:
                    messages:
                    - code: STOP-Place-409-duplicate
                      message: A Stop Payment already exists for the requested check(s)
        '412':
          description: Precondition failed
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend service
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: /commercial/checks/v1/stops/place
                ServiceError:
                  metadata:
                    messages:
                    - code: STOP-Place-412-accountNumber
                      message: Invalid Account
        '415':
          description: Media type not supported
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend service
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: /commercial/checks/v1/stops/place
                ServiceError:
                  metadata:
                    messages:
                    - code: STOP-Place-415-Unsupported-Media-Type
                      message: Content-Type 'X' is not supported.
        '422':
          description: Unexpected backend server error
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend service
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: /commercial/checks/v1/stops/place
                ServiceError:
                  metadata:
                    messages:
                    - code: STOP-Place-422-error
                      message: Unable to place the requested Stop Payment.
        '429':
          description: Too many requests
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Number requests threshold reached, please resubmit the request after sometime
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: /commercial/checks/v1/stops/place
        '500':
          description: Unexpected server error
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                TransactionTime: '2021-06-11T16:31:34.041Z'
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                Api-Url: /commercial/checks/v1/stops/place
                ServiceError:
                  metadata:
                    messages:
                    - code: STOP-Place-500-error
                      message: Unable to place the requested Stop Payment.
        '502':
          description: Bad gateway
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                TransactionTime: '2021-06-11T16:31:34.041Z'
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                Api-Url: /commercial/checks/v1/stops/place
                ServiceError:
                  ConnectError: Connectivity error occurred with the downstream service (Unexpected EOF at target), please check with application support team before resubmitting the request
        '503':
          description: Service unavailable
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              examples:
                SystemDown:
                  summary: Service unavailable
                  value:
                    ErrorMessage: Error received from backend
                    TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                    X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                    TransactionTime: '2021-06-11T16:31:34.041Z'
                    Api-Url: /commercial/checks/v1/stops/place
                    ServiceError:
                      ConnectError: Service is currently unavailable (NoActiveTargets), please check with application support before resubmitting the request.
                SystemDownBatch:
                  summary: Scheduled System Outage
                  value:
                    ErrorMessage: Error received from backend
                    TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                    X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                    TransactionTime: '2021-06-11T16:31:34.041Z'
                    Api-Url: /commercial/checks/v1/stops/place
                    ServiceError:
                      metadata:
                        messages:
                        - code: STOP-Place-503-error
                          message: Stop Payment API is unavailable.  Please retry later.
        '504':
          description: Gateway timeout
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: /commercial/checks/v1/stops/place
                ServiceError:
                  ConnectError: Request could not be processed on time (GatewayTimeout), please wait a moment and resubmit the request.
components:
  schemas:
    ConnectError:
      type: object
      properties:
        ConnectError:
          type: string
          description: API connectivity error information, if available.
    Message:
      type: object
      description: Field-level error or informational message.
      properties:
        code:
          type: string
          description: Machine-readable code.
          examples:
          - IMAGE-Check-200-Success
        message:
          type: string
          description: Human-readable message associated with the code.
          examples:
          - Successfully retrieved records.
    StopPaymentPlaceResponse:
      type: object
      description: Successful response to place a stop payment.
      properties:
        stopPayments:
          $ref: '#/components/schemas/StopPayments'
    ResponseMetadata:
      type: object
      description: Error metadata including validation or service messages.
      properties:
        messages:
          type: array
          maxItems: 100
          description: List of messages describing validation errors or other informational messages.
          items:
            $ref: '#/components/schemas/Message'
    StopPaymentPlaceRequest:
      type: object
      description: Request to place a stop payment on an account.
      required:
      - accountNumber
      - checkNumberStart
      properties:
        accountNumber:
          type: string
          description: The account number to place the stop payment. This is a numeric ID and should not exceed 16 characters.
          maxLength: 16
          pattern: ^\d+$
        checkAmount:
          type: number
          format: double
          description: The amount of the check to stop. Must be a valid monetary value with no more than two decimal places.
          examples:
          - 12.1
          - 1224234
          - 0.57
        issueDate:
          type: string
          description: 'The original check issue date. This must be a valid calendar date in the correct format. Format: YYYY-MM-DD'
          pattern: ^\d{4}\-(0?[1-9]|1[0-2])\-(0?[1-9]|[1-2][0-9]|3[0-1])$
          format: date
        checkNumberStart:
          type: integer
          format: int64
          description: The starting (lowest) check number in the range for which a stop payment is requested.
          minimum: 1
          maximum: 99999999999
        checkNumberEnd:
          type: integer
          format: int64
          description: The last (hightest) check number in the range for which a stop payment is requested. If the number is not specified, it will default to the same value as checkNumberStart.
          minimum: 1
          maximum: 99999999999
        description:
          type: string
          maxLength: 30
          description: A custom text field to provide a brief explanation of the stop payment request.
    StopPayments:
      type: object
      description: Stop payment record.
      properties:
        accountNumber:
          type: string
          description: The account number to place the stop payment.
          maxLength: 16
          pattern: ^\d+$
        checkNumberStart:
          type: integer
          format: int64
          description: The starting (lowest) check number in the range for which a stop payment is requested.
          minimum: 1
          maximum: 99999999999
        checkNumberEnd:
          type: integer
          format: int64
          description: The last (hightest) check number in the range for which a stop payment is requested. If the number is not specified, it will default to the same value as checkNumberStart.
          minimum: 1
          maximum: 99999999999
        checkAmount:
          type: number
          format: double
          description: The amount of the check to stop.
          examples:
          - 12.1
          - 1224234
          - 0.57
        expirationDate:
          type: string
          description: 'Stop payment expiration date. Format: YYYY-MM-DD'
          pattern: ^\d{4}\-(0?[1-9]|1[0-2])\-(0?[1-9]|[1-2][0-9]|3[0-1])$
          format: date
        description:
          type: string
          maxLength: 30
          description: A custom text field to provide a brief explanation of the stop payment request.
        placedDate:
          type: string
          description: 'Stop payment placed or effective date. Format: YYYY-MM-DD'
          pattern: ^\d{4}\-(0?[1-9]|1[0-2])\-(0?[1-9]|[1-2][0-9]|3[0-1])$
          format: date
        issueDate:
          type: string
          description: 'Original check issue date. Format: YYYY-MM-DD'
          pattern: ^\d{4}\-(0?[1-9]|1[0-2])\-(0?[1-9]|[1-2][0-9]|3[0-1])$
          format: date
    ServiceErrorData:
      type: object
      title: serviceErrorData
      description: Detailed service-level error information, if available.
      properties:
        metadata:
          $ref: '#/components/schemas/ResponseMetadata'
    Exception:
      type: object
      description: Contains information about errors related to the request.
      title: exceptionSchema
      properties:
        ErrorMessage:
          type: string
          description: A human-readable message that describes the type or source of the error.
        TransactionId:
          type: string
          description: A unique transaction ID returned with the response, useful for traceability.
        X-CorrelationId:
          type: string
          description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
        TransactionTime:
          type: string
          format: date-time
          description: Date and time the error occurred.
        Api-Url:
          type: string
          description: The API URL path of the call that generated the response.
        ServiceError:
          type: object
          title: ServiceError
          description: Detailed service-level error details, if available.
          oneOf:
          - $ref: '#/components/schemas/ServiceErrorData'
          - $ref: '#/components/schemas/ConnectError'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'Access token supplied in the `Authorization` header using the `Bearer` scheme (e.g. `Authorization: Bearer {token}`).'