アクセス可能なクライアントを一覧表示することは、Google Ads API ではお客様 ID を指定する必要がない数少ないリクエストのひとつであり、提供された login-customer-id はすべて無視されます。お客様のリストは OAuth 認証情報に基づいて作成されます。このリクエストは、現在の認証情報を提供すると、直接操作できるすべてのアカウントのリストを返します。これには、必ずしもアカウント階層内のすべてのアカウントが含まれるわけではなく、認証されたユーザーがアカウントの管理者などの権利で追加されたアカウントだけを含みます。
ご自身が図の 2 つの階層で M1 と C3 の管理者であるユーザー A であるとします。GoogleAdsService などの Google Ads API への呼び出しを行う場合は、M1、C1、C2、C3 のアカウント情報にアクセスできます。ただし、CustomerService.ListAccessibleCustomers を呼び出すと M1 と C3 のみが返されます。これらのみがユーザー A に対して直接的なアクセス権が付与されるアカウントであることがその理由です。
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["必要な情報がない","missingTheInformationINeed","thumb-down"],["複雑すぎる / 手順が多すぎる","tooComplicatedTooManySteps","thumb-down"],["最新ではない","outOfDate","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["サンプル / コードに問題がある","samplesCodeIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-09-06 UTC。"],[[["\u003cp\u003eThe \u003ccode\u003eListAccessibleCustomers\u003c/code\u003e method allows you to retrieve a list of customer accounts that you have direct access to with your current credentials.\u003c/p\u003e\n"],["\u003cp\u003eThis list is determined by your OAuth credentials and includes accounts where you have admin or other rights, not necessarily all accounts within the hierarchy.\u003c/p\u003e\n"],["\u003cp\u003eDirect access, as opposed to access through a manager account, is required for a customer account to be included in the results of \u003ccode\u003eListAccessibleCustomers\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eWhile the API doesn't directly list cancelled accounts, a workaround involves comparing active customer client links with enabled customer clients.\u003c/p\u003e\n"]]],[],null,["You can list customers accessible to you with the\n[`ListAccessibleCustomers`](/google-ads/api/reference/rpc/v21/CustomerService/ListAccessibleCustomers)\nmethod in [`CustomerService`](/google-ads/api/reference/rpc/v21/CustomerService). However, it is\nnecessary to understand which customers are returned in this type of request.\n\nListing accessible customers is one of the few requests in the Google Ads API that does\nnot require you to specify a customer ID in the request, and the request ignores\nany supplied [`login-customer-id`](/google-ads/api/docs/concepts/call-structure#cid).\nThe resulting list of customers is based on your OAuth credentials. The\nrequest returns a list of all accounts that you are able to act upon\n**directly** given your current credentials. This won't necessarily include\nall accounts within the account hierarchy; rather, it will only include accounts\nwhere your authenticated user has been added with admin or other rights in the\naccount.\n\nImagine you are user `A` who is an admin for `M1` and `C3` in the two\nhierarchies shown in the figure. If you were to make a call to the Google Ads API, for\nexample to [`GoogleAdsService`](/google-ads/api/reference/rpc/v21/GoogleAdsService), you could\naccess information for accounts `M1`, `C1`, `C2`, and `C3`. However, a call to\n[`CustomerService.ListAccessibleCustomers`](/google-ads/api/reference/rpc/v21/CustomerService/ListAccessibleCustomers)\nwould return only `M1` and `C3` since those are the only accounts where user `A`\nhas **direct** access.\n\nHere is a code example illustrating the use of the\n[`CustomerService.ListAccessibleCustomers`](/google-ads/api/reference/rpc/v21/CustomerService/ListAccessibleCustomers)\nmethod:\n\n\nJava \n\n```java\nprivate void runExample(GoogleAdsClient client) {\n // Optional: Change credentials to use a different refresh token, to retrieve customers\n // available for a specific user.\n //\n // UserCredentials credentials =\n // UserCredentials.newBuilder()\n // .setClientId(\"INSERT_OAUTH_CLIENT_ID\")\n // .setClientSecret(\"INSERT_OAUTH_CLIENT_SECRET\")\n // .setRefreshToken(\"INSERT_REFRESH_TOKEN\")\n // .build();\n //\n // client = client.toBuilder().setCredentials(credentials).build();\n\n try (CustomerServiceClient customerService =\n client.getLatestVersion().createCustomerServiceClient()) {\n ListAccessibleCustomersResponse response =\n customerService.listAccessibleCustomers(\n ListAccessibleCustomersRequest.newBuilder().build());\n\n System.out.printf(\"Total results: %d%n\", response.getResourceNamesCount());\n\n for (String customerResourceName : response.getResourceNamesList()) {\n System.out.printf(\"Customer resource name: %s%n\", customerResourceName);\n }\n }\n}https://github.com/googleads/google-ads-java/blob/e5d86e34c0a6ec321f9d8adeaa38102e1ce19498/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/ListAccessibleCustomers.java#L71-L96\n \n```\n\nC# \n\n```c#\npublic void Run(GoogleAdsClient client)\n{\n // Get the CustomerService.\n CustomerServiceClient customerService = client.GetService(Services.V21.CustomerService);\n\n try\n {\n // Retrieve the list of customer resources.\n string[] customerResourceNames = customerService.ListAccessibleCustomers();\n\n // Display the result.\n foreach (string customerResourceName in customerResourceNames)\n {\n Console.WriteLine(\n $\"Found customer with resource name = '{customerResourceName}'.\");\n }\n }\n catch (GoogleAdsException e)\n {\n Console.WriteLine(\"Failure:\");\n Console.WriteLine($\"Message: {e.Message}\");\n Console.WriteLine($\"Failure: {e.Failure}\");\n Console.WriteLine($\"Request ID: {e.RequestId}\");\n throw;\n }\n}https://github.com/googleads/google-ads-dotnet/blob/e986f4a8fe3e45216e06048a187ddb44ccdebfb9/Google.Ads.GoogleAds/examples/AccountManagement/ListAccessibleCustomers.cs#L70-L95\n \n```\n\nPHP \n\n```php\npublic static function runExample(GoogleAdsClient $googleAdsClient)\n{\n $customerServiceClient = $googleAdsClient-\u003egetCustomerServiceClient();\n\n // Issues a request for listing all accessible customers.\n $accessibleCustomers =\n $customerServiceClient-\u003elistAccessibleCustomers(new ListAccessibleCustomersRequest());\n print 'Total results: ' . count($accessibleCustomers-\u003egetResourceNames()) . PHP_EOL;\n\n // Iterates over all accessible customers' resource names and prints them.\n foreach ($accessibleCustomers-\u003egetResourceNames() as $resourceName) {\n /** @var string $resourceName */\n printf(\"Customer resource name: '%s'%s\", $resourceName, PHP_EOL);\n }\n} \nhttps://github.com/googleads/google-ads-php/blob/be0249c30c27b4760387bec6682b82c9f4167761/examples/AccountManagement/ListAccessibleCustomers.php#L88-L102\n\n \n```\n\nPython \n\n```python\ndef main(client: GoogleAdsClient) -\u003e None:\n customer_service: CustomerServiceClient = client.get_service(\n \"CustomerService\"\n )\n\n accessible_customers: ListAccessibleCustomersResponse = (\n customer_service.list_accessible_customers()\n )\n result_total: int = len(accessible_customers.resource_names)\n print(f\"Total results: {result_total}\")\n\n resource_names: List[str] = accessible_customers.resource_names\n for resource_name in resource_names: # resource_name is implicitly str\n print(f'Customer resource name: \"{resource_name}\"')https://github.com/googleads/google-ads-python/blob/c7535c7e2a8f87bb6abbad4c4b4ea05d5b4593b4/examples/account_management/list_accessible_customers.py#L38-L51\n \n```\n\nRuby \n\n```ruby\ndef list_accessible_customers()\n # GoogleAdsClient will read a config file from\n # ENV['HOME']/google_ads_config.rb when called without parameters\n client = Google::Ads::GoogleAds::GoogleAdsClient.new\n\n accessible_customers = client.service.customer.list_accessible_customers().resource_names\n\n accessible_customers.each do |resource_name|\n puts \"Customer resource name: #{resource_name}\"\n end\nend \nhttps://github.com/googleads/google-ads-ruby/blob/9939642cd39ccdd2ae0893a4510b85870e1ba682/examples/account_management/list_accessible_customers.rb#L29-L39\n\n \n```\n\nPerl \n\n```perl\nsub list_accessible_customers {\n my ($api_client) = @_;\n\n my $list_accessible_customers_response =\n $api_client-\u003eCustomerService()-\u003elist_accessible_customers();\n\n printf \"Total results: %d.\\n\",\n scalar @{$list_accessible_customers_response-\u003e{resourceNames}};\n\n foreach\n my $resource_name (@{$list_accessible_customers_response-\u003e{resourceNames}})\n {\n printf \"Customer resource name: '%s'.\\n\", $resource_name;\n }\n\n return 1;\n}https://github.com/googleads/google-ads-perl/blob/9abffd69cd856633dfdcee5c636fe9cd0eb4b5ed/examples/account_management/list_accessible_customers.pl#L36-L52\n \n```\n\ncurl \n\n```console\n# Returns the resource names of customers directly accessible by the user\n# authenticating the call.\n#\n# Variables:\n# API_VERSION,\n# DEVELOPER_TOKEN,\n# OAUTH2_ACCESS_TOKEN:\n# See https://developers.google.com/google-ads/api/rest/auth#request_headers\n# for details.\n#\ncurl -f --request GET \\\n\"https://googleads.googleapis.com/v${API_VERSION}/customers:listAccessibleCustomers\" \\\n--header \"Content-Type: application/json\" \\\n--header \"developer-token: ${DEVELOPER_TOKEN}\" \\\n--header \"Authorization: Bearer ${OAUTH2_ACCESS_TOKEN}\" \\ \nhttps://github.com/googleads/google-ads-rest/blob/8558f03e49805014debe9d128c71821c782624b9/list_accessible_customers.sh#L16-L30\n\n \n```\n\n\u003cbr /\u003e\n\nList cancelled accounts\n\nThe Google Ads API doesn't provide a direct way to list the cancelled accounts under\na Manager account. However, you can use the following workaround to retrieve\nthis list.\n\n1. Retrieve the list of `ACTIVE` links using the `customer_client_link` resource\n and make a list of customers using the `customer_client_link.client_customer`\n field.\n\n SELECT customer_client_link.client_customer, customer_client_link.status FROM\n customer_client_link WHERE customer_client_link.status = ACTIVE\n\n2. Retrieve the list of `ENABLED` accounts using the `customer_client` resource.\n\n SELECT customer_client.id, customer_client.descriptive_name FROM customer_client\n\n3. The difference between the two lists gives you the list of cancelled accounts."]]