- [HTTP request](https://docs.cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/instances/preCheckMajorVersionUpgrade#body.HTTP_TEMPLATE)
- [Path parameters](https://docs.cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/instances/preCheckMajorVersionUpgrade#body.PATH_PARAMETERS)
- [Request body](https://docs.cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/instances/preCheckMajorVersionUpgrade#body.request_body)
- [Response body](https://docs.cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/instances/preCheckMajorVersionUpgrade#body.response_body)
- [Authorization scopes](https://docs.cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/instances/preCheckMajorVersionUpgrade#body.aspect)
- [InstancesPreCheckMajorVersionUpgradeRequest](https://docs.cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/instances/preCheckMajorVersionUpgrade#InstancesPreCheckMajorVersionUpgradeRequest)
  - [JSON representation](https://docs.cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/instances/preCheckMajorVersionUpgrade#InstancesPreCheckMajorVersionUpgradeRequest.SCHEMA_REPRESENTATION)
- [Examples](https://docs.cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/instances/preCheckMajorVersionUpgrade#examples)
- [Try it!](https://docs.cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/instances/preCheckMajorVersionUpgrade#try-it)

Execute MVU Pre-checks

### HTTP request

`POST https://sqladmin.googleapis.com/sql/v1beta4/projects/{project}/instances/{instance}/preCheckMajorVersionUpgrade`

The URL uses [gRPC Transcoding](https://google.aip.dev/127) syntax.

### Path parameters

| Parameters ||
|---|---|
| `project` | `string` Required. Project ID of the project that contains the instance. |
| `instance` | `string` Required. Cloud SQL instance ID. This does not include the project ID. |

### Request body

The request body contains an instance of `https://docs.cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/instances/preCheckMajorVersionUpgrade#InstancesPreCheckMajorVersionUpgradeRequest`.

### Response body

If successful, the response body contains an instance of `https://docs.cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/operations#Operation`.

### Authorization scopes

Requires one of the following OAuth scopes:

- `https://www.googleapis.com/auth/cloudsql`
- `
  https://www.googleapis.com/auth/cloud-platform`
- `
  https://www.googleapis.com/auth/sqlservice.admin`

For more information, see the [Authentication Overview](https://docs.cloud.google.com/docs/authentication#authorization-gcp).

## InstancesPreCheckMajorVersionUpgradeRequest

Request for Pre-checks for MVU

| JSON representation |
|---|
| ``` { "preCheckMajorVersionUpgradeContext": { object (`https://docs.cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/operations#PreCheckMajorVersionUpgradeContext`) } } ``` |

| Fields ||
|---|---|
| `preCheckMajorVersionUpgradeContext` | ``object (`https://docs.cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/operations#PreCheckMajorVersionUpgradeContext`)`` Required. Contains details about the pre-check major version upgrade operation. |