[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-08-19。"],[],[],null,["This document shows you how to validate schemas for Pub/Sub topics.\nThe validation check does not check the compatibility of the new revision\nwith the older revisions.\n\nBefore you begin\n\n- Understand how [Pub/Sub schemas work](/pubsub/docs/schemas).\n- [Create a schema](/pubsub/docs/create-schemas).\n\nRequired roles and permissions\n\n\nTo get the permissions that\nyou need to validate schemas definitions and manage them,\n\nask your administrator to grant you the\n\n\n[Pub/Sub Editor](/iam/docs/roles-permissions/pubsub#pubsub.editor) (`roles/pubsub.editor`)\nIAM role on your project.\n\n\nFor more information about granting roles, see [Manage access to projects, folders, and organizations](/iam/docs/granting-changing-revoking-access).\n\n\nThis predefined role contains\n\nthe permissions required to validate schemas definitions and manage them. To see the exact permissions that are\nrequired, expand the **Required permissions** section:\n\n\nRequired permissions\n\nThe following permissions are required to validate schemas definitions and manage them:\n\n- Create schema: ` ``pubsub.schemas.create`\n- Attach schema to topic: ` ``pubsub.schemas.attach`\n- Commit a schema revision: ` ``pubsub.schemas.commit`\n- Delete a schema or a schema revision: ` ``pubsub.schemas.delete`\n- Get a schema or schema revisions: ` ``pubsub.schemas.get`\n- List schemas: ` ``pubsub.schemas.list`\n- List schema revisions: ` ``pubsub.schemas.listRevisions`\n- Rollback a schema: ` ``pubsub.schemas.rollback`\n- Validate a message: ` ``pubsub.schemas.validate`\n- Get the IAM policy for a schema: ` ``pubsub.schemas.getIamPolicy`\n- Configure the [IAM policy](/iam/docs/reference/rest/v1/Policy) for a schema: ` ``pubsub.schemas.setIamPolicy`\n\n\nYou might also be able to get\nthese permissions\nwith [custom roles](/iam/docs/creating-custom-roles) or\nother [predefined roles](/iam/docs/roles-overview#predefined).\n\nYou can grant roles and permissions to principals such as users, groups,\ndomains, or service accounts. You can create a schema in one project and\nattach it to a topic located in a different project.\nEnsure that you have the required permissions for\neach project.\n\nValidate a schema definition\n\nYou can validate a schema by using the\nGoogle Cloud console, the gcloud CLI, the Pub/Sub API,\nor the Cloud Client Libraries.\n\nFollow the steps discussed in [Create a schema](/pubsub/docs/create-schemas).\n\nThe validation check does not check the compatibility of the new revision\nwith the older revisions.\n\nWhat's next\n\n- [Validate a message for a schema](/pubsub/docs/validate-schema-message)\n\n- [Publish messages to a topic with a schema](/pubsub/docs/publish-topics-schema)"]]
