Auto Scaling SOAP API
We have deprecated the SOAP API for Amazon EC2 Auto Scaling. As of December 4, 2017, if you make a SOAP request, you will receive the following response:
Client.InvalidQueryParameter: SOAP is no longer supported
We recommend that you use the Query API for Amazon EC2 Auto Scaling, the Amazon CLI, or one of the Amazon SDKs. For more information, see Work with Auto Scaling groups in the Amazon EC2 Auto Scaling User Guide.