# Backend appId Storage
<a name="backend-appid-storage"></a>

Create a storage resource in your Amplify app backend.

## URI
<a name="backend-appid-storage-url"></a>

`/prod/backend/appId/storage`

## HTTP methods
<a name="backend-appid-storage-http-methods"></a>

### POST
<a name="backend-appid-storagepost"></a>

**Operation ID:** `CreateBackendStorage`

Creates a backend storage resource.


**Path parameters**  

| Name | Type | Required | Description | 
| --- |--- |--- |--- |
| appId | String | True | The app ID. | 


**Responses**  

| Status code | Response model | Description | 
| --- |--- |--- |
| 200 | BackendStorageRespObj | 200 response | 
| 400 | BadRequestException | 400 response | 
| 404 | NotFoundException | 404 response | 
| 429 | LimitExceededException | 429 response | 
| 504 | InternalServiceException | 504 response | 

### OPTIONS
<a name="backend-appid-storageoptions"></a>

Enables CORS by returning the correct headers.


**Path parameters**  

| Name | Type | Required | Description | 
| --- |--- |--- |--- |
| appId | String | True | The app ID. | 


**Responses**  

| Status code | Response model | Description | 
| --- |--- |--- |
| 200 | None | 200 response | 

## Schemas
<a name="backend-appid-storage-schemas"></a>

### Request bodies
<a name="backend-appid-storage-request-examples"></a>

#### POST schema
<a name="backend-appid-storage-request-body-post-example"></a>

```
{
  "resourceConfig": {
    "bucketName": "string",
    "permissions": {
      "authenticated": [
        enum
      ],
      "unAuthenticated": [
        enum
      ]
    },
    "serviceName": enum
  },
  "resourceName": "string",
  "backendEnvironmentName": "string"
}
```

### Response bodies
<a name="backend-appid-storage-response-examples"></a>

#### BackendStorageRespObj schema
<a name="backend-appid-storage-response-body-backendstoragerespobj-example"></a>

```
{
  "jobId": "string",
  "appId": "string",
  "backendEnvironmentName": "string",
  "status": "string"
}
```

#### BadRequestException schema
<a name="backend-appid-storage-response-body-badrequestexception-example"></a>

```
{
  "message": "string"
}
```

#### NotFoundException schema
<a name="backend-appid-storage-response-body-notfoundexception-example"></a>

```
{
  "message": "string",
  "resourceType": "string"
}
```

#### LimitExceededException schema
<a name="backend-appid-storage-response-body-limitexceededexception-example"></a>

```
{
  "message": "string",
  "limitType": "string"
}
```

#### InternalServiceException schema
<a name="backend-appid-storage-response-body-internalserviceexception-example"></a>

```
{
  "message": "string"
}
```

## Properties
<a name="backend-appid-storage-properties"></a>

### BackendStoragePermissions
<a name="backend-appid-storage-model-backendstoragepermissions"></a>

Describes the read, write, and delete permissions users have against your storage S3 bucket.


| Property | Type | Required | Description | 
| --- |--- |--- |--- |
| authenticated | Array of type stringValues: `READ \| CREATE_AND_UPDATE \| DELETE` | True | Lists all authenticated user read, write, and delete permissions for your S3 bucket. | 
| unAuthenticated | Array of type stringValues: `READ \| CREATE_AND_UPDATE \| DELETE` | False | Lists all unauthenticated user read, write, and delete permissions for your S3 bucket. | 

### BackendStorageRespObj
<a name="backend-appid-storage-model-backendstoragerespobj"></a>

The response object for this operation.


| Property | Type | Required | Description | 
| --- |--- |--- |--- |
| appId | string | True | The app ID. | 
| backendEnvironmentName | string | True | The name of the backend environment. | 
| jobId | string | True | The ID for the job. | 
| status | string | True | The current status of the request. | 

### BadRequestException
<a name="backend-appid-storage-model-badrequestexception"></a>

An error returned if a request is not formed properly.


| Property | Type | Required | Description | 
| --- |--- |--- |--- |
| message | string | False | An error message to inform that the request failed. | 

### CreateBackendStorageReqObj
<a name="backend-appid-storage-model-createbackendstoragereqobj"></a>

The request object for this operation.


| Property | Type | Required | Description | 
| --- |--- |--- |--- |
| backendEnvironmentName | string | True | The name of the backend environment. | 
| resourceConfig | [CreateBackendStorageResourceConfig](#backend-appid-storage-model-createbackendstorageresourceconfig) | True | The resource configuration for creating backend storage. | 
| resourceName | string | True | The name of the storage resource. | 

### CreateBackendStorageResourceConfig
<a name="backend-appid-storage-model-createbackendstorageresourceconfig"></a>

The resource configuration for creating backend storage.


| Property | Type | Required | Description | 
| --- |--- |--- |--- |
| bucketName | string | False | The name of the S3 bucket. | 
| permissions | [BackendStoragePermissions](#backend-appid-storage-model-backendstoragepermissions) | True | The authorization configuration for the storage S3 bucket. | 
| serviceName | stringValues: `S3` | True | The name of the storage service. | 

### InternalServiceException
<a name="backend-appid-storage-model-internalserviceexception"></a>

An error returned if there's a temporary issue with the service.


| Property | Type | Required | Description | 
| --- |--- |--- |--- |
| message | string | False | An error message to inform that the request failed. | 

### LimitExceededException
<a name="backend-appid-storage-model-limitexceededexception"></a>

An error that is returned when a limit of a specific type has been exceeded.


| Property | Type | Required | Description | 
| --- |--- |--- |--- |
| limitType | string | False | The type of limit that was exceeded. | 
| message | string | False | An error message to inform that the request has failed. | 

### NotFoundException
<a name="backend-appid-storage-model-notfoundexception"></a>

An error returned when a specific resource type is not found.


| Property | Type | Required | Description | 
| --- |--- |--- |--- |
| message | string | False | An error message to inform that the request has failed. | 
| resourceType | string | False | The type of resource that is not found. | 

## See also
<a name="backend-appid-storage-see-also"></a>

For more information about using this API in one of the language-specific AWS SDKs and references, see the following:

### CreateBackendStorage
<a name="CreateBackendStorage-see-also"></a>
+ [AWS Command Line Interface V2](/goto/cli2/amplifybackend-2020-08-11/CreateBackendStorage)
+ [AWS SDK for .NET V4](/goto/DotNetSDKV4/amplifybackend-2020-08-11/CreateBackendStorage)
+ [AWS SDK for C\$1\$1](/goto/SdkForCpp/amplifybackend-2020-08-11/CreateBackendStorage)
+ [AWS SDK for Go v2](/goto/SdkForGoV2/amplifybackend-2020-08-11/CreateBackendStorage)
+ [AWS SDK for Java V2](/goto/SdkForJavaV2/amplifybackend-2020-08-11/CreateBackendStorage)
+ [AWS SDK for JavaScript V3](/goto/SdkForJavaScriptV3/amplifybackend-2020-08-11/CreateBackendStorage)
+ [AWS SDK for Kotlin](/goto/SdkForKotlin/amplifybackend-2020-08-11/CreateBackendStorage)
+ [AWS SDK for PHP V3](/goto/SdkForPHPV3/amplifybackend-2020-08-11/CreateBackendStorage)
+ [AWS SDK for Python](/goto/boto3/amplifybackend-2020-08-11/CreateBackendStorage)
+ [AWS SDK for Ruby V3](/goto/SdkForRubyV3/amplifybackend-2020-08-11/CreateBackendStorage)