> ## Documentation Index > Fetch the complete documentation index at: https://docs.seam.co/llms.txt > Use this file to discover all available pages before exploring further. # Update Multiple Linked Access Codes > Updates [access codes](https://docs.seam.co/low-level-apis/smart-locks/access-codes) that share a common code across multiple devices. Specify the `common_code_key` to identify the set of access codes that you want to update. See also [Update Linked Access Codes](https://docs.seam.co/low-level-apis/smart-locks/access-codes/creating-and-updating-multiple-linked-access-codes#update-linked-access-codes). ## OpenAPI ````yaml /openapi.json post /access_codes/update_multiple openapi: 3.0.0 info: title: Seam Connect version: 1.0.0 servers: - url: https://connect.getseam.com security: [] tags: - description: access_codes name: /access_codes - description: acs name: /acs - description: action_attempts name: /action_attempts - description: client_sessions name: /client_sessions - description: connected_accounts name: /connected_accounts - description: connect_webviews name: /connect_webviews - description: devices name: /devices - description: events name: /events - description: health name: /health - description: locks name: /locks - description: networks name: /networks - description: noise_sensors name: /noise_sensors - description: phones name: /phones - description: thermostats name: /thermostats - description: user_identities name: /user_identities - description: webhooks name: /webhooks - description: workspaces name: /workspaces paths: /access_codes/update_multiple: post: tags: - /access_codes summary: Update Multiple Linked Access Codes description: >- Updates [access codes](https://docs.seam.co/low-level-apis/smart-locks/access-codes) that share a common code across multiple devices. Specify the `common_code_key` to identify the set of access codes that you want to update. See also [Update Linked Access Codes](https://docs.seam.co/low-level-apis/smart-locks/access-codes/creating-and-updating-multiple-linked-access-codes#update-linked-access-codes). operationId: accessCodesUpdateMultiplePost requestBody: content: application/json: schema: properties: common_code_key: description: >- Key that links the group of access codes, assigned on creation by `/access_codes/create_multiple`. type: string ends_at: description: >- Date and time at which the validity of the new access code ends, in [ISO 8601](https://www.iso.org/iso-8601-date-and-time-format.html) format. Must be a time in the future and after `starts_at`. type: string name: description: >- Name of the new access code. Enables administrators and users to identify the access code easily, especially when there are numerous access codes. Note that the name provided on Seam is used to identify the code on Seam and is not necessarily the name that will appear in the lock provider's app or on the device. This is because lock providers may have constraints on names, such as length, uniqueness, or characters that can be used. In addition, some lock providers may break down names into components such as `first_name` and `last_name`. To provide a consistent experience, Seam identifies the code on Seam by its name but may modify the name that appears on the lock provider's app or on the device. For example, Seam may add additional characters or truncate the name to meet provider constraints. To help your users identify codes set by Seam, Seam provides the name exactly as it appears on the lock provider's app or on the device as a separate property called `appearance`. This is an object with a `name` property and, optionally, `first_name` and `last_name` properties (for providers that break down a name into components). type: string starts_at: description: >- Date and time at which the validity of the new access code starts, in [ISO 8601](https://www.iso.org/iso-8601-date-and-time-format.html) format. type: string required: - common_code_key type: object responses: '200': content: application/json: schema: properties: ok: type: boolean required: - ok type: object description: OK '400': description: Bad Request '401': description: Unauthorized security: - client_session: [] - client_session_with_customer: [] - pat_with_workspace: [] - console_session_with_workspace: [] - api_key: [] x-codeSamples: - lang: javascript label: Seam SDK source: |- await seam.accessCodes.updateMultiple({ ends_at: "2025-06-22T05:05:47.000Z", starts_at: "2025-06-18T19:14:13.000Z", name: "My Updated Linked Access Code", common_code_key: "auto_set_by_create_multiple_550e8400-e29b-41d4-a716-446655440000", }); /* // void */ - lang: bash label: cURL source: >- curl --include --request POST "https://connect.getseam.com/access_codes/update_multiple" \ --header "Authorization: Bearer $SEAM_API_KEY" \ --json @- < nil - lang: php label: Seam SDK source: |- $seam->access_codes->update_multiple( ends_at: "2025-06-22T05:05:47.000Z", starts_at: "2025-06-18T19:14:13.000Z", name: "My Updated Linked Access Code", common_code_key: "auto_set_by_create_multiple_550e8400-e29b-41d4-a716-446655440000", ); - lang: bash label: Seam CLI source: >- seam access-codes update-multiple --ends_at "2025-06-22T05:05:47.000Z" --starts_at "2025-06-18T19:14:13.000Z" --name "My Updated Linked Access Code" --common_code_key "auto_set_by_create_multiple_550e8400-e29b-41d4-a716-446655440000" # {} components: securitySchemes: client_session: bearerFormat: Client Session Token scheme: bearer type: http client_session_with_customer: bearerFormat: Customer Client Session Token scheme: bearer type: http pat_with_workspace: bearerFormat: API Token scheme: bearer type: http console_session_with_workspace: bearerFormat: Console Session Token scheme: bearer type: http api_key: bearerFormat: API Key scheme: bearer type: http ````