generated: '2026-08-13'
method: searched
source: >-
  https://learn.microsoft.com/en-us/linkedin/marketing/integrations/ads/account-structure/create-and-manage-accounts
summary: >-
  There is no separate sandbox host, no test-mode key prefix and no simulated
  clock. LinkedIn is explicit that "all API Calls at all access levels are made
  on production data". The only isolation LinkedIn offers is a test Ad Account —
  a production ad account created with test:true, which never spends money —
  plus a Campaign Manager tool for sending a test lead through Lead Sync.
separation:
  model: test flag on a production entity
  hosts:
    live: https://api.linkedin.com/rest
    sandbox: null
  key_prefixes: null
  note: All access tiers operate against production data.
test_account:
  resource: /rest/adAccounts
  field: test
  type: boolean
  default: false
  immutable: true
  set_at: creation only
  limit_per_app: 1
  restrictions:
    - test cannot be true when type is ENTERPRISE (CONDITIONAL_INVALID_VALUE)
    - an existing account cannot be converted to a test account (FIELD_NOT_EDITABLE)
    - segment/audience creation is not supported for test accounts (SEGMENT_CREATION_NOT_ALLOWED_FOR_TEST_ACCOUNTS)
  errors_on_abuse:
    - TEST_ACCOUNT_LIMIT_REACHED
    - BATCH_CREATE_TEST_ACCOUNT_LIMIT_REACHED
  access_tier_note: >-
    In the Development tier the API may create exactly this one test Ad Account;
    all real Ad Accounts must be created through the Campaign Manager UI.
  docs: >-
    https://learn.microsoft.com/en-us/linkedin/marketing/integrations/ads/account-structure/create-and-manage-accounts
test_leads:
  tool: Campaign Manager "Send a test lead"
  note: >-
    Generates a test Lead Form response so a Lead Sync integration can be
    exercised end to end, including a registered lead-notification webhook.
  docs: https://learn.microsoft.com/en-us/linkedin/marketing/lead-sync/leadsync
token_tooling:
  developer_portal_token_generator: https://www.linkedin.com/developers/tools/oauth
  postman_workspace: >-
    https://www.postman.com/linkedin-developer-apis/workspace/linkedin-marketing-solutions-versioned-apis/overview
  note: >-
    LinkedIn ships a public Postman workspace with per-product collections and
    matching environments (e.g. campaign-management-env), pre-wired for the
    3-legged OAuth flow with the Postman callback URLs.
  docs: https://learn.microsoft.com/en-us/linkedin/marketing/authentication/lms-generate-an-access-token
not_provided:
  - test API host
  - test/live key prefixes
  - test clocks or time simulation
  - fixture or event-trigger tooling
  - magic test identifiers
x-evidence:
  fetched: '2026-08-13'
  checks:
    - url: >-
        https://learn.microsoft.com/en-us/linkedin/marketing/integrations/ads/account-structure/create-and-manage-accounts
      http_status: 200
    - url: https://learn.microsoft.com/en-us/linkedin/marketing/integrations/marketing-tiers
      http_status: 200
    - url: >-
        https://www.postman.com/linkedin-developer-apis/workspace/linkedin-marketing-solutions-versioned-apis/overview
      http_status: 200