## Update an App

`client.MagicTransit.Apps.Update(ctx, accountAppID, params) (*AppUpdateResponse, error)`

**put** `/accounts/{account_id}/magic/apps/{account_app_id}`

Updates an Account App

### Parameters

- `accountAppID string`

  Identifier

- `params AppUpdateParams`

  - `AccountID param.Field[string]`

    Path param: Identifier

  - `Hostnames param.Field[[]string]`

    Body param: FQDNs to associate with traffic decisions.

  - `IPSubnets param.Field[[]string]`

    Body param: IPv4 CIDRs to associate with traffic decisions. (IPv6 CIDRs are currently unsupported)

  - `Name param.Field[string]`

    Body param: Display name for the app.

  - `SourceSubnets param.Field[[]string]`

    Body param: IPv4 CIDRs to associate with traffic decisions. (IPv6 CIDRs are currently unsupported)

  - `Type param.Field[string]`

    Body param: Category of the app.

### Returns

- `type AppUpdateResponse struct{…}`

  Custom app defined for an account.

  - `AccountAppID string`

    Magic account app ID.

  - `Hostnames []string`

    FQDNs to associate with traffic decisions.

  - `IPSubnets []string`

    IPv4 CIDRs to associate with traffic decisions. (IPv6 CIDRs are currently unsupported)

  - `Name string`

    Display name for the app.

  - `SourceSubnets []string`

    IPv4 CIDRs to associate with traffic decisions. (IPv6 CIDRs are currently unsupported)

  - `Type string`

    Category of the app.

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/cloudflare/cloudflare-go"
  "github.com/cloudflare/cloudflare-go/magic_transit"
  "github.com/cloudflare/cloudflare-go/option"
)

func main() {
  client := cloudflare.NewClient(
    option.WithAPIToken("Sn3lZJTBX6kkg7OdcBUAxOO963GEIyGQqnFTOFYY"),
  )
  app, err := client.MagicTransit.Apps.Update(
    context.TODO(),
    "023e105f4ecef8ad9ca31a8372d0c353",
    magic_transit.AppUpdateParams{
      AccountID: cloudflare.F("023e105f4ecef8ad9ca31a8372d0c353"),
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", app.AccountAppID)
}
```

#### Response

```json
{
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "result": {
    "account_app_id": "ac60d3d0435248289d446cedd870bcf4",
    "hostnames": [
      "auth.cloudflare.com"
    ],
    "ip_subnets": [
      "192.0.2.0/24"
    ],
    "name": "Cloudflare Dashboard",
    "source_subnets": [
      "192.0.2.0/24"
    ],
    "type": "Development"
  },
  "success": true
}
```