A globally unique identifier for the backup which cannot be changed. Values are of the form projects/<project>/instances/<instance>/backups/[a-z][a-z0-9_\-]*[a-z0-9] The final segment of the name must be between 2 and 60 characters in length.
The backup is stored in the location(s) specified in the instance configuration of the instance containing the backup, identified by the prefix of the backup name of the form projects/<project>/instances/<instance>.
Required. A mask specifying which fields (for example, expireTime) in the backup resource should be updated. This mask is relative to the backup resource, not to the request message. The field mask must always be specified; this prevents any future fields from being erased accidentally by clients that do not know about them.
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 2025-07-23 UTC."],[],[],null,["# Method: projects.instances.backups.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- [Try it!](#try-it)\n\nUpdates a pending or completed [Backup](/spanner/docs/reference/rest/v1/projects.instances.backups#Backup).\n\n### HTTP request\n\nChoose a location: \nglobal europe-west8 me-central2 us-central1 us-central2 us-east1 us-east4 us-east5 us-south1 us-west1 us-west2 us-west3 us-west4 us-west8 us-east7 \n\n\u003cbr /\u003e\n\nThe URLs use [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 [Backup](/spanner/docs/reference/rest/v1/projects.instances.backups#Backup).\n\n### Response body\n\nIf successful, the response body contains an instance of [Backup](/spanner/docs/reference/rest/v1/projects.instances.backups#Backup).\n\n### Authorization scopes\n\nRequires one of the following OAuth scopes:\n\n- `https://www.googleapis.com/auth/spanner.admin`\n- `https://www.googleapis.com/auth/cloud-platform`\n\nFor more information, see the [Authentication Overview](/docs/authentication#authorization-gcp).\n\n### IAM Permissions\n\nRequires the following [IAM](https://cloud.google.com/iam/docs) permission on the `name` resource:\n\n- `spanner.backups.update`\n\nFor more information, see the [IAM documentation](https://cloud.google.com/iam/docs)."]]