title: Sagemaker Multi container endpoints error
body: <p>I am trying to use the sagemaker multi-container option to deploy models. I am using the latest sagemaker version and PyTorch models. It looks like version mismatch from my point of view.</p>
  <pre><code>create_model_response = sm_client.create_model(
  ModelName=&quot;multi-container3&quot;,
  Containers=[pytorch_container, pytorch_container2],
  InferenceExecutionConfig={&quot;Mode&quot;: &quot;Direct&quot;},
  ExecutionRoleArn=role,)
  </code></pre>
  <p>But I am getting this error. Any clue?</p>
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>---------------------------------------------------------------------------
  ParamValidationError                      Traceback (most recent call last)
  &lt;ipython-input-96-c6e1810e5d03&gt; in &lt;module&gt;
        3     Containers=[pytorch_container, pytorch_container2],
        4     InferenceExecutionConfig={"Mode": "Direct"},
  ----&gt; 5     ExecutionRoleArn=role,
        6 )
  
  /opt/conda/lib/python3.7/site-packages/botocore/client.py in _api_call(self, *args, **kwargs)
      355         use_fips_endpoint = client.meta.config.use_fips_endpoint
      356         S3EndpointSetter(
  --&gt; 357             endpoint_resolver=self._endpoint_resolver,
      358             region=client.meta.region_name,
      359             s3_config=client.meta.config.s3,
  
  /opt/conda/lib/python3.7/site-packages/botocore/client.py in _make_api_call(self, operation_name, api_params)
      647             metadata=resolved,
      648             signature_version=signature_version,
  --&gt; 649         )
      650 
      651     def _resolve_endpoint_variant_config_var(self, config_var):
  
  /opt/conda/lib/python3.7/site-packages/botocore/client.py in _convert_to_request_dict(self, api_params, operation_model, context)
      695     ):
      696         if endpoint_url is None:
  --&gt; 697             # Expand the default hostname URI template.
      698             hostname = self.default_endpoint.format(
      699                 service=service_name, region=region_name
  
  /opt/conda/lib/python3.7/site-packages/botocore/validate.py in serialize_to_request(self, parameters, operation_model)
      295         #   "type":"string",
      296         #   "min":1,
  --&gt; 297         #   "max":256
      298         #  }
      299         range_check(name, len(param), shape, 'invalid length', errors)
  
  ParamValidationError: Parameter validation failed:
  Unknown parameter in input: "InferenceExecutionConfig", must be one of: ModelName, PrimaryContainer, Containers, ExecutionRoleArn, Tags, VpcConfig, EnableNetworkIsolation</code></pre>
  </div>
  </div>
  </p>
  <p>Thanks in advance</p>