HTTP Post Call from one Salesforce org to another not working

Question

I have two Salesforce orgs connected and I am trying to pass a created Opportunity from one to the other using Apex REST callouts. Everything seems to be connected properly because when I test with a "GET" method, I get a successful HTTP code (200).

The receiving org's code is very simple (still in the proof of concept stage so not much here just to see if it passes through correctly).

@HttpPost
global static ID postOpp(String name) {
    Opportunity o = new Opportunity(
    name = name);

    o.closedate = date.newInstance(2020,10,10);
    o.stagename = 'Qualification';
    o.accountID = '0015x000026OM6g';       
    
    insert o;
    return o.Id;
}

When I use workbench, and test a POST request in this org, I see it is successful and the opp is created. Now I am trying to send an opp from my other Salesforce org. I've tried setting the body a few different ways but nothing seems to be working.

    Http http = new Http();
    HttpResponse response = new HttpResponse();
    HttpRequest request = new HttpRequest();
    request.setEndpoint('callout:HS_Integration');
    request.setMethod('POST');
    
    JSONGenerator j = JSON.createGenerator(true);
    j.writeStartObject();
    j.writeStringField('Name', 'test cm 4');
    j.writeEndObject();
    String jsonS = j.getAsString();
    
    request.setBody(jsonS);
    
    response = http.send(request);

I don't think anything is wrong with my authorization or named credentials because of the successful HTTP code. As you can see I try using setBody() with a basic JSON string, I've also tried it with a much simpler string I saw some people use ('name=TestOpp'), but the opp is not getting created in the target org. How am I supposed to use setBody to pass over information correctly? Can someone explain what I may be missing?

Thanks

Answer 1

When using automatic parameters, there's a top-level "request" object you need to pass in. Your code should look like:

String body = JSON.serialize(
  new Map<String, Object> {
    'request' => new Map<String, Object> {
      'name' => 'test cm 4'
    }
  }
);
request.setBody(body);

Also note that the parameters are case-sensitive; you cannot use Name instead of name.

The payload should look like:

{ "request": { "name": "test cm 4" } }

You may also find the documentation helpful.