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

# Update Loyalty Program Voucher

> ### Update Voucher

Updates an existing voucher within a loyalty program.

- **Path Parameters**:
    - `programId`: UUID of the loyalty program
    - `voucherId`: UUID of the voucher

- **Request Body**:
    - `data`: JSON object containing voucher data to be updated.

- **Returns**:
    - Updated voucher details as a JSON object.



## OpenAPI

````yaml https://api.loyalty.dog/openapi.json put /v2/loyalty/programs/{programId}/vouchers/{voucherId}
openapi: 3.1.0
info:
  title: LoyaltyDog
  description: >-

    Welcome to the LoyaltyDog API! This API provides access to our loyalty
    program features, allowing you to integrate with various platforms and
    manage your loyalty data.


    Want to query LoyaltyDog via an AI assistant (Claude, Cursor, Windsurf)? See
    the [MCP Integration guide](https://loyaltydog.ai/playground#mcp).
        
  termsOfService: https://loyalty.dog/loyalty-program-terms-service
  contact:
    name: LoyaltyDog Support
    url: https://loyalty.dog/contact-us
    email: support@loyalty.dog
  version: 1.0.1
servers:
  - url: https://api.loyalty.dog
    description: Production
security:
  - bearerAuth: []
paths:
  /v2/loyalty/programs/{programId}/vouchers/{voucherId}:
    put:
      tags:
        - Loyalty
      summary: Update Loyalty Program Voucher
      description: |-
        ### Update Voucher

        Updates an existing voucher within a loyalty program.

        - **Path Parameters**:
            - `programId`: UUID of the loyalty program
            - `voucherId`: UUID of the voucher

        - **Request Body**:
            - `data`: JSON object containing voucher data to be updated.

        - **Returns**:
            - Updated voucher details as a JSON object.
      operationId: >-
        update_loyalty_program_voucher_v2_loyalty_programs__programId__vouchers__voucherId__put
      parameters:
        - name: voucherId
          in: path
          required: true
          schema:
            anyOf:
              - $ref: '#/components/schemas/PydanticObjectId'
              - type: string
            title: Voucherid
        - name: programId
          in: path
          required: true
          schema:
            anyOf:
              - $ref: '#/components/schemas/PydanticObjectId'
              - type: string
            title: Programid
        - name: authorization
          in: header
          required: false
          schema:
            anyOf:
              - type: string
              - type: 'null'
            title: Authorization
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateVoucherPayload'
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
components:
  schemas:
    PydanticObjectId:
      type: string
      maxLength: 24
      minLength: 24
      pattern: ^[0-9a-f]{24}$
      example: 5eb7cf5a86d9755df3a6c593
    CreateVoucherPayload:
      properties:
        name:
          type: string
          title: Name
        description:
          anyOf:
            - type: string
            - type: 'null'
          title: Description
        startDate:
          anyOf:
            - type: string
              format: date-time
            - type: 'null'
          title: Startdate
        endDate:
          anyOf:
            - type: string
              format: date-time
            - type: 'null'
          title: Enddate
        type:
          anyOf:
            - $ref: '#/components/schemas/VoucherType'
            - type: 'null'
        expiresIn:
          anyOf:
            - type: number
            - type: integer
            - type: 'null'
          title: Expiresin
        limitPerCustomer:
          anyOf:
            - type: integer
            - type: 'null'
          title: Limitpercustomer
        availabilityCount:
          anyOf:
            - type: integer
            - type: 'null'
          title: Availabilitycount
        requireFields:
          anyOf:
            - items:
                type: string
              type: array
            - type: 'null'
          title: Requirefields
        issueBeforeBirthday:
          anyOf:
            - type: number
            - type: integer
            - type: 'null'
          title: Issuebeforebirthday
        discountValue:
          anyOf:
            - type: number
            - type: 'null'
          title: Discountvalue
        discountCurrency:
          anyOf:
            - type: string
            - type: 'null'
          title: Discountcurrency
        discountType:
          anyOf:
            - $ref: '#/components/schemas/OfferType'
            - type: 'null'
        categories:
          anyOf:
            - type: string
            - type: 'null'
          title: Categories
        products:
          anyOf:
            - type: string
            - type: 'null'
          title: Products
        priceRule:
          anyOf:
            - $ref: '#/components/schemas/OfferPriceRule'
            - type: 'null'
      type: object
      required:
        - name
      title: CreateVoucherPayload
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    VoucherType:
      type: string
      enum:
        - welcome
        - birthday
        - other
      title: VoucherType
    OfferType:
      type: string
      enum:
        - fixed
        - percent
        - other
      title: OfferType
    OfferPriceRule:
      type: string
      enum:
        - min
        - max
        - none
      title: OfferPriceRule
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: JWT access token obtained from POST /v2/token.

````