Document AI は、ユーザー定義のラベルまたは Key-Value ペア(KVP)を、プロセッサに送信されるメタデータとして ProcessDocument、BatchProcessDocuments リクエストに追加することをサポートしています。リクエストに関するこのメタデータ(ページ数などの使用状況データとともに)は、Cloud Billing システムに転送されます。このラベルは課金システムに設定され、このメタデータ ラベルを使用してフィルタリングすることで、請求料金を分類できます。
ユースケース
ラベルの主なユースケースとして、多数のクライアントにドキュメント処理サービスを提供するお客様が挙げられます。1 つのプロジェクトが複数のクライアントに対して使用される場合があります。課金の際は、特定のリクエストをそれぞれのクライアントに関連付けることが重要です。ここで役立つのがメタデータ ラベルです。 Google Cloudでレポートをフィルタリングするためのものです。
[[["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"]],[["わかりにくい","hardToUnderstand","thumb-down"],["情報またはサンプルコードが不正確","incorrectInformationOrSampleCode","thumb-down"],["必要な情報 / サンプルがない","missingTheInformationSamplesINeed","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-09-04 UTC。"],[[["\u003cp\u003eDocument AI allows adding custom metadata labels (key-value pairs) to \u003ccode\u003eProcessDocument\u003c/code\u003e and \u003ccode\u003eBatchProcessDocuments\u003c/code\u003e requests.\u003c/p\u003e\n"],["\u003cp\u003eThese metadata labels are forwarded to the Cloud Billing system, enabling users to filter and break down billing charges based on these labels.\u003c/p\u003e\n"],["\u003cp\u003eEach request can have up to 64 labels, and each label consists of a key and a value, both of which have character and length constraints.\u003c/p\u003e\n"],["\u003cp\u003eLabels are particularly useful for customers managing document processing services for multiple clients within a single project, as they facilitate the association of specific requests with their respective clients for billing purposes.\u003c/p\u003e\n"],["\u003cp\u003eThe Cloud Billing console allows for filtering usage reports using these metadata labels, enabling detailed analysis of request activity.\u003c/p\u003e\n"]]],[],null,["# Custom metadata labels\n======================\n\nDocument AI supports adding user-defined labels or key-value pairs (KVPs) as metadata\nsent to the processor to [`ProcessDocument`](/document-ai/docs/reference/rest/v1/projects.locations.processors/process), [`BatchProcessDocuments`](/document-ai/docs/reference/rest/v1/projects.locations.processors/batchProcess)\nrequests.\nThis metadata about the request (along with the usage data, like number of pages)\nis forwarded to the Cloud Billing system. It's populated in the billing\nsystem, where you can break down your billing charges by filtering using these metadata labels.\n\nUse case\n--------\n\nAn important use case for labels involves customers who provide document processing\nservices to many clients. A single project can be used for multiple clients.\nFor billing purposes, it's important to associate specific requests with their\nrespective clients. That's where these metadata labels come in. They're for filtering\nreports in Google Cloud.\n\nRequirements for labels\n-----------------------\n\nThe labels applied to a request must meet the following requirements:\n\n- Each request can have multiple labels, up to a maximum of 64.\n- Each label must be a KVP.\n- Keys have a minimum length of 1 character and maximum 63 characters and cannot be empty. Values can be empty and have a maximum length of 63 characters.\n- Keys and values contain only lowercase letters, numeric characters, underscores, and dashes. All characters must use UTF-8 encoding, and international characters are allowed.\n- The key portion of a label must be unique within a single request (for example, `{'country':'india'}` is fine, but `{'country':'india','country':'sweden'}` is not allowed).\n- Keys must start with a lowercase letter or international character.\n\nUsage with API\n--------------\n\nThe `Sync Process` code sample shows you how to send a request to a processor using a label. \n\n curl -X POST \\\n -H \"Authorization: Bearer $(gcloud auth print-access-token)\" \\\n -H \"Content-Type: application/json; charset=utf-8\" \\\n -d @docai_request.json \\\n \"https://us-documentai.googleapis.com/v1/projects/514064100333/locations/us/processors/3bb61571a9731982:process\"\n\nSample Request \n\n {\n \"skipHumanReview\": true,\n \"rawDocument\": {\n \"mimeType\": \"application/pdf\",\n \"content\" : \"PDF/IMAGE CONTENT\"\n },\n \"labels\": {\"country\": \"india\" },\n \"processOptions\": {\n \"individualPageSelector\" : {\n \"pages\": [1]\n }\n }\n }\n\nThe `Async Process` code sample shows you how to send a request to a processor using a label. \n\n curl -X POST \\\n -H \"Authorization: Bearer $(gcloud auth print-access-token)\" \\\n -H \"Content-Type: application/json; charset=utf-8\" \\\n -d @batch_docai_request.json \\\n \"https://us-documentai.googleapis.com/v1/projects/514064100333/locations/us/processors/3bb61571a9731982:batchProcess\"\n\nSample Request \n\n {\n \"inputDocuments\": {\n \"gcsPrefix\": {\n \"gcsUriPrefix\": \"gs://atul_dai_test/ravi/GCS_DWH_work_flows_docs/Small_pdf/\"\n }\n },\n \"documentOutputConfig\": {\n \"gcsOutputConfig\": {\n \"gcsUri\": \"gs://atul_dai_test/ravi/GCS_DWH_work_flows_docs/test/docai_config/\"\n }\n },\n \"labels\": {\"country\": \"india\" },\n \"skipHumanReview\": true\n }\n\n### Pricing report\n\nYou can use these labels to view request usage.\n\n1. Go to the [Cloud Billing console](https://console.cloud.google.com/billing).\n\n2. From the console, select the **Menu** at the upper left, and select **Billing** from the drop-down. If you have multiple billing accounts\n a page appears that asks you to make a selection. Select **Go to linked billing account**.\n\n3. From the billing page, select **Reports** in the left-hand navigation pane.\n\n4. Use the filters in the right-hand pane to check usage of requests."]]