# UpdateModel
<a name="API_UpdateModel"></a>

Changes information about a model. The maximum size of the model is 400 KB.

## Request Syntax
<a name="API_UpdateModel_RequestSyntax"></a>

```
PATCH /restapis/restapi_id/models/model_name HTTP/1.1
Content-type: application/json

{
   "patchOperations": [ 
      { 
         "from": "string",
         "op": "string",
         "path": "string",
         "value": "string"
      }
   ]
}
```

## URI Request Parameters
<a name="API_UpdateModel_RequestParameters"></a>

The request uses the following URI parameters.

 ** [model\$1name](#API_UpdateModel_RequestSyntax) **   <a name="apigw-UpdateModel-request-uri-modelName"></a>
The name of the model to update.  
Required: Yes

 ** [restapi\$1id](#API_UpdateModel_RequestSyntax) **   <a name="apigw-UpdateModel-request-uri-restApiId"></a>
The string identifier of the associated RestApi.  
Required: Yes

## Request Body
<a name="API_UpdateModel_RequestBody"></a>

The request accepts the following data in JSON format.

 ** [patchOperations](#API_UpdateModel_RequestSyntax) **   <a name="apigw-UpdateModel-request-patchOperations"></a>
For more information about supported patch operations, see [Patch Operations](patch-operations.md).  
Type: Array of [PatchOperation](API_PatchOperation.md) objects  
Required: No

## Response Syntax
<a name="API_UpdateModel_ResponseSyntax"></a>

```
HTTP/1.1 200
Content-type: application/json

{
   "contentType": "string",
   "description": "string",
   "id": "string",
   "name": "string",
   "schema": "string"
}
```

## Response Elements
<a name="API_UpdateModel_ResponseElements"></a>

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

 ** [contentType](#API_UpdateModel_ResponseSyntax) **   <a name="apigw-UpdateModel-response-contentType"></a>
The content-type for the model.  
Type: String

 ** [description](#API_UpdateModel_ResponseSyntax) **   <a name="apigw-UpdateModel-response-description"></a>
The description of the model.  
Type: String

 ** [id](#API_UpdateModel_ResponseSyntax) **   <a name="apigw-UpdateModel-response-id"></a>
The identifier for the model resource.  
Type: String

 ** [name](#API_UpdateModel_ResponseSyntax) **   <a name="apigw-UpdateModel-response-name"></a>
The name of the model. Must be an alphanumeric string.  
Type: String

 ** [schema](#API_UpdateModel_ResponseSyntax) **   <a name="apigw-UpdateModel-response-schema"></a>
The schema for the model. For `application/json` models, this should be JSON schema draft 4 model. Do not include "\$1\$1/" characters in the description of any properties because such "\$1\$1/" characters may be interpreted as the closing marker for comments in some languages, such as Java or JavaScript, causing the installation of your API's SDK generated by API Gateway to fail.  
Type: String

## Errors
<a name="API_UpdateModel_Errors"></a>

For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** BadRequestException **   
The submitted request is not valid, for example, the input is incomplete or incorrect. See the accompanying error message for details.  
HTTP Status Code: 400

 ** ConflictException **   
The request configuration has conflicts. For details, see the accompanying error message.  
HTTP Status Code: 409

 ** LimitExceededException **   
The request exceeded the rate limit. Retry after the specified time period.  
HTTP Status Code: 429

 ** NotFoundException **   
The requested resource is not found. Make sure that the request URI is correct.  
HTTP Status Code: 404

 ** TooManyRequestsException **   
The request has reached its throttling limit. Retry after the specified time period.  
HTTP Status Code: 429

 ** UnauthorizedException **   
The request is denied because the caller has insufficient permissions.  
HTTP Status Code: 401

## Examples
<a name="API_UpdateModel_Examples"></a>

### Update the schema definition of a model
<a name="API_UpdateModel_Example_1"></a>

This example illustrates one usage of UpdateModel.

#### Sample Request
<a name="API_UpdateModel_Example_1_Request"></a>

```
PATCH /restapis/uojnr9hd57/models/output HTTP/1.1
Content-Type: application/json
Host: apigateway.us-east-1.amazonaws.com
X-Amz-Date: 20160614T004253Z
Authorization: AWS4-HMAC-SHA256 Credential={access_key_ID}/20160614/us-east-1/apigateway/aws4_request, SignedHeaders=content-length;content-type;host;x-amz-date, Signature={sig4_hash}

{
  "patchOperations" : [ {
    "op" : "replace",
    "path" : "/schema",
    "value" : "{\n\t\"title\": \"Calc output\",\n\t\"type\": \"object\",\n\t\"properties\": {\n\t\t\"a\": {\n\t\t\t\"type\": \"number\"\n\t\t},\n\t\t\"b\": {\n\t\t\t\"type\": \"number\"\n\t\t},\n\t\t\"op\": {\n\t\t\t\"description\": \"operation of +, -, * or /\",\n\t\t\t\"type\": \"string\"\n\t\t},\n\t\t\"c\": {\n\t\t    \"type\": \"number\"\n\t\t}\n\t},\n\t\"required\": [\"a\", \"b\", \"op\"]\n}\n"
  } ]
}
```

#### Sample Response
<a name="API_UpdateModel_Example_1_Response"></a>

```
{
  "_links": {
    "curies": {
      "href": "https://docs.aws.amazon.com/apigateway/latest/developerguide/restapi-model-{rel}.html",
      "name": "model",
      "templated": true
    },
    "self": {
      "href": "/restapis/uojnr9hd57/models/output?flatten=false"
    },
    "model:create": {
      "href": "/restapis/uojnr9hd57/models"
    },
    "model:delete": {
      "href": "/restapis/uojnr9hd57/models/output"
    },
    "model:generate-template": {
      "href": "/restapis/uojnr9hd57/models/output/default_template"
    },
    "model:update": {
      "href": "/restapis/uojnr9hd57/models/output"
    }
  },
  "contentType": "application/json",
  "id": "hkhn0z",
  "name": "output",
  "schema": "{\n\t\"title\": \"Calc output\",\n\t\"type\": \"object\",\n\t\"properties\": {\n\t\t\"a\": {\n\t\t\t\"type\": \"number\"\n\t\t},\n\t\t\"b\": {\n\t\t\t\"type\": \"number\"\n\t\t},\n\t\t\"op\": {\n\t\t\t\"description\": \"operation of +, -, * or /\",\n\t\t\t\"type\": \"string\"\n\t\t},\n\t\t\"c\": {\n\t\t    \"type\": \"number\"\n\t\t}\n\t},\n\t\"required\": [\"a\", \"b\", \"op\"]\n}\n"
}
```

## See Also
<a name="API_UpdateModel_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/apigateway-2015-07-09/UpdateModel) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/apigateway-2015-07-09/UpdateModel) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/apigateway-2015-07-09/UpdateModel) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/apigateway-2015-07-09/UpdateModel) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/apigateway-2015-07-09/UpdateModel) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/apigateway-2015-07-09/UpdateModel) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/apigateway-2015-07-09/UpdateModel) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/apigateway-2015-07-09/UpdateModel) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/apigateway-2015-07-09/UpdateModel) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/apigateway-2015-07-09/UpdateModel)