Update on the issue:The issue can be handled via workaround by implementing "IPreProcessor" interface and overriding "preprocess" method. You can add logic to customise the request payload before initiating an HTTP request. 

@Pulkit_Jain_    Thanks for the response. I have already reviewed the solution provided by support and dropped few comments on top of that too.    So the solution from support is to use formdata(x-www-form-urlencoded) instead of JSON(application/json) in POST request to achieve the nested hierarchy ...

Hi Everyone,   I am facing an issue with the FDM regarding the swagger configuration. I want to have a flat structure JSON Model request for the API and it is working fine in the Swagger Editor (Version 2) but for some reason when I use this YAML to create a FDM it encapsulates the flat json into a ...