> ## Documentation Index > Fetch the complete documentation index at: https://docs.daily.co/llms.txt > Use this file to discover all available pages before exploring further. # Update Domain Dial Config Info > update an existing pinless_dialin or pin_dialin config ## OpenAPI ````yaml PUT /domain-dialin-config/{id} openapi: 3.0.3 info: title: Daily API description: |- The Daily REST API offers the ability to manage the following: - Overall Domain Configuration - Individual Room creation and config management - Meeting token creation and validation - Recording and compositing management - Meeting analytics - Logs and metrics - Real-time presence Please reach out to help@daily.co if we can help with anything version: 1.1.1 contact: name: Daily url: https://docs.daily.co email: help@daily.co servers: - url: https://api.daily.co/v1 security: - bearerAuth: [] paths: /domain-dialin-config/{id}: put: tags: - domain-dialin-config summary: domain-dialin-config/:id description: update an existing pinless_dialin or pin_dialin config operationId: UpdateDomainDialConfigInfo parameters: - name: id in: path required: true style: simple explode: false schema: type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/domain_dialin_config_update_req' responses: '200': description: '200' content: application/json: schema: $ref: '#/components/schemas/domain_dialin_config_info_res' '400': $ref: '#/components/responses/400' deprecated: false security: - bearerAuth: [] components: schemas: domain_dialin_config_update_req: type: object description: >- the configuration object passed to update an existing pinless or pin dialin. properties: phone_number: type: string example: '+12555599999' description: >- The phone number to update to the existing dialin config, in E.164 format (e.g. "+18058700061"). If the same number is used by any other config then the API will fail. name_prefix: type: string example: my-identifier-prefix description: Update the name_prefix of an existing config. hmac: type: string example: 9jyatvPWQfBymCGDOYPYKF/TRZXR+08Gj4bvPF78pH0= description: >- The [HMAC signature](/guides/products/dial-in-dial-out/dialin-pinless#hmac) used to verify the webhook called to "room_creation_api". (only for pinless_dialin type). room_creation_api: type: string example: https://mydomain.com/api/create-room description: >- The URL to call when a call is received on configured phoneNumber or sip_uri. (only for pinless_dialin type). flow is described [here](/guides/products/dial-in-dial-out/dialin-pinless#quick-overview) hold_music_url: type: string example: https://mydomain.com/hold-music.mp3 description: >- The URL to the hold music to play when the call is received, (only for pinless_dialin type). The hold music must be a publicly accessible URL in MP3 format. The hold music must be less than 10MB in size and less than 60 seconds in duration. In pinless_dialin, the hold music will be played twice. timeout_config: type: object description: The timeout configuration for the dialin config. properties: message: type: string example: No Agents are available right now, please try again later description: >- If room_creation_api does not respond within the timeout period, this message will be played to the caller. ivr_greeting: type: object description: >- configuration when the call is received on phone number (only for pin_dialin). properties: message: type: string example: >- Please enter the dialin code for the meeting, it is in the meeting invite description: The message to play when call first connects. domain_dialin_config_info_res: type: object properties: id: type: string example: 0cb313e1-211f-4be0-833d-8c7305b19902 description: >- A unique, opaque ID for this object. You can use this ID in API calls, and in paginated list operations. type: type: string example: pinless_dialin description: >- describes the type of configuration. It can be pinless_dialin or pin_dialin. enum: - pinless_dialin - pin_dialin config: $ref: '#/components/schemas/domain_dialin_config_create_req' domain_dialin_config_create_req: type: object description: >- the configuration object passed to the POST API that creates the dialin config. required: - type - phone_number properties: type: type: string enum: - pin_dialin - pinless_dialin description: The type of dial-in configuration to create. phone_number: type: string example: '+12555599999' description: >- The phone number to configure for pinless_dialin or pin_dialin, in E.164 format (e.g. "+18058700061"). If the same number is used by any other config then the API will fail. Required for pinless_dialin, optional for pin_dialin. name_prefix: type: string example: my-identifier-prefix description: friendly name for the configuration. hmac: type: string example: 9jyatvPWQfBymCGDOYPYKF/TRZXR+08Gj4bvPF78pH0= description: >- The [HMAC signature](/guides/products/dial-in-dial-out/dialin-pinless#hmac) used to verify the webhook called to "room_creation_api". (only for pinless_dialin type) room_creation_api: type: string example: https://mydomain.com/api/create-room description: >- The API to request when a call is received on configured phoneNumber or sip_uri. (only for pinless_dialin type). flow is described [here](/guides/products/dial-in-dial-out/dialin-pinless#quick-overview) hold_music_url: type: string example: https://mydomain.com/hold-music.mp3 description: >- The URL to the hold music to play when the call is received, (only for pinless_dialin type). The hold music must be a publicly accessible URL in MP3 format. The hold music must be less than 10MB in size and less than 60 seconds in duration. In pinless_dialin, the hold music will be played twice. timeout_config: type: object description: The timeout configuration for the dialin config. properties: message: type: string example: No Agents are available right now, please try again later description: >- If room_creation_api does not respond within the timeout period, this message will be played to the caller. ivr_greeting: type: object description: >- configuration when the call is received on phone number (only for pin_dialin). properties: message: type: string example: >- Please enter the dialin code for the meeting, it is in the meeting invite description: The message to play when call first connects. responses: '400': description: '400' content: application/json: schema: type: object properties: error: type: string info: type: string examples: Result: value: error: invalid-request-error info: missing required field securitySchemes: bearerAuth: type: http scheme: bearer ````