Required. Field mask is used to specify the fields to be overwritten in the Index resource by the update. The fields specified in the updateMask are relative to the resource, not the full request. A field of the resource will be overwritten if it is in the mask. Empty field mask is not allowed. If the mask is "*", it triggers a full update of the index, and also a whole rebuild of index data.
This is a comma-separated list of fully qualified names of fields. Example: "user.displayName,photo".
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-06-27 UTC."],[],[],null,["# Method: projects.locations.corpora.indexes.patch\n\n- [HTTP request](#body.HTTP_TEMPLATE)\n- [Path parameters](#body.PATH_PARAMETERS)\n- [Query parameters](#body.QUERY_PARAMETERS)\n- [Request body](#body.request_body)\n- [Response body](#body.response_body)\n- [Authorization scopes](#body.aspect)\n- [IAM Permissions](#body.aspect_1)\n\nUpdates an Index under the corpus. Users can perform a metadata-only update or trigger a full index rebuild with different updateMask values.\n\n### HTTP request\n\n`PATCH https://visionai.googleapis.com/v1/{index.name=projects/*/locations/*/corpora/*/indexes/*}`\n\nThe URL uses [gRPC Transcoding](https://google.aip.dev/127) syntax.\n\n### Path parameters\n\n### Query parameters\n\n### Request body\n\nThe request body contains an instance of [Index](/vision-ai/docs/reference/rest/v1/projects.locations.corpora.indexes#Index).\n\n### Response body\n\nIf successful, the response body contains an instance of [Operation](/vision-ai/docs/reference/rest/Shared.Types/ListOperationsResponse#Operation).\n\n### Authorization scopes\n\nRequires the following OAuth scope:\n\n- `https://www.googleapis.com/auth/cloud-platform`\n\nFor more information, see the [Authentication Overview](https://cloud.google.com/docs/authentication/).\n\n### IAM Permissions\n\nRequires the following [IAM](https://cloud.google.com/iam/docs) permission on the `name` resource:\n\n- `visionai.indexes.update`\n\nFor more information, see the [IAM documentation](https://cloud.google.com/iam/docs)."]]