source
An Elastic Beanstalk configuration template to base this one on. If specified, Elastic Beanstalk uses the configuration values from the specified configuration template to create a new configuration. Values specified in OptionSettings override any values obtained from the SourceConfiguration. You must specify SourceConfiguration if you don't specify PlatformArn, EnvironmentId, or SolutionStackName. Constraint: If both solution stack name and source configuration are specified, the solution stack of the source configuration template must match the specified solution stack name.